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SMOK TFV12 Prince Sub-Ohm Tank Review

The first of two Reviews for the new SMOK TFV12 Prince Sub-Ohm Tank

Of all the companies we encounter each week, none are more prolific than SMOK. And when the company finds something that works, they COMMIT to maximizing the brand, with its growing line of sister products. Some offshoots are more successful than others, but all have been consistently reliable, if not entirely innovative.


But this is no normal offshoot. The SMOK TFV12 Prince tank is far and away the best sub-ohm tank the company has released. In fact, pay no attention to the “Prince” name – this is easily the new king of SMOK’s ever-growing lineup.

SMOK TFV12 Prince Sub-ohm Tank Review – Spinfuel Vape

Initial impressions of the SMOK TFV12 Prince Tank

The SMOK TFV12 Prince makes a commanding first impression. My black and red test model comes across as  a perfect meld of all the company’s previous winning ideas, alongside a nice array of new touches.

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The first thing anyone will notice is the convex glass section, which allows the Prince to hold up to 8mL of e-liquid without adding unnecessary height to the proceedings. The glass isn’t the usual “gumball machine/fishbowl” shape, however. Instead, nicely beveled edges and squared-off parts help the Prince appear more svelte than it actually is.


SMOK included a straight glass replacement in the box, but this shaves a considerable amount of capacity from the Prince, rendering it useless to this reviewer. Of course, for a more compact tank, the option is certainly there.


The second item of note is the gorgeous red resin drip tip (subtly called the “Cobra” by SMOK’s marketing gurus). The honeycomb/snakeskin pattern jumps at you, while the resin is a huge step up from the usual Delrin and Ultem offerings. It’s odd to get excited about something as minimal as a drip tip, but in terms of presenting a complete package, SMOK left out no detail.


The final item you’ll notice from the outset is the TFV12 Prince’s new button-release mechanism on the standard swivel top-cap. While I never once faced any looseness or wonky behavior from SMOK’s previous renditions, this button helps add a little extra security by effectively creating a two-step locking system.


Speaking of the top-cap, the kidney-shaped juice port is finally (and mercifully) wider, eliminating much of the pooling and spillage that happened with many of SMOK’s “Baby” line, as well as the TFV8 “Beast.” All of my bottles and droppers allowed me to fill with ease, nearly to the top of its capacity.

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The SMOK TFV12 Prince Coils

SMOK TFV12 Prince Sub-ohm Tank Review – Spinfuel VapeLet’s lead off this section with a major positive – the SMOK Prince coils are fantastic. Though it’s near impossible to keep up with SMOK’s naming/numbering scheme for its myriad coil offerings, the three included heads bring users tremendous vapor production, and near-RDA flavor. In fact, it’s closer to drip-quality than any coils we’ve experienced, short of the amazing Uwell Valyrian.


From what we can tell, there are no fewer than four new coil choices – three of which are in the box – designed exclusively for the SMOK TFV12 Prince tank, as well as an RBA deck for build enthusiasts. The key upgrade for these coils lies in the multiple large juice ports – larger than SMOK has done in prior editions – which all but ensured no dry hits would ensue under normal usage.


The pre-installed 0.4-ohm Prince Q4 is the most-reserved of the three, which is saying a lot, considering how easily this quad-coil head fogged my office. This one sat right in my usual comfort zone of 60-80 watts, with the best performance on the higher end of the spectrum.


The 0.15-ohm X6 sextuple coil was another strong performer, with near-equal flavor and a huge boost in vapor production. Though this head is rated up to 120 watts, I found it worked best around 80-90, as flavor quality diminished at higher levels.


Cloud enthusiasts will likely flock to the T10 decuple – a word I just learned – coil head, which is clearly a vapor-focused design. While the flavor was still very good, it was much more muted and less vibrant than in the first two I tried.


But the vapor? Man ALIVE will cloud enthusiasts love the T10. Even at conservative wattages, this coil produced vapor that rivaled some competition RDAs. It was nearly overwhelming, but altogether awesome for users who vape in this manner.


So, what are the negatives? First, it should be noted that the SMOK TFV12 Prince is not for vapers looking to conserve e-liquid. Though fans of these products are well-aware of how they swallow juice at an exponential pace, the Prince practically requires the 8mL glass section, unless you want to refill every 20 minutes.

Secondly, SMOK Prince coils are proprietary. After a week of research and a fruitless email to SMOK, I have seen no evidence indicating these coils are compatible with the TFV12 King and vice versa.

I have called SMOK to the carpet for this practice before, most recently with the oddly proprietary X-Baby tank, and despite the top-tier performance of the included coil heads, I stand behind my belief that this needs to end. Though I’ll never ask companies to stop producing better products, there’s no reason threading and diameter can’t be adjusted to fit multiple devices.

The silver lining here is that SMOK is releasing an RBA deck for the Prince, which will soften this blow considerably. I love the included coils, and will certainly purchase more (especially if they prove to be long-lasting, which some doubt have surfaced recently) but the last thing I want to invest in are a slew of uni-taskers, when so much of SMOK’s design is based on similar design principles.

Vaping the SMOK TFV12 Prince Tank

Getting back to the experience, the SMOK TFV12 Prince is the pinnacle of the three-year progression the company has made since introducing the TFV4. It’s not as obscenely large as the King, not as leaky as the Beast, and decidedly more innovative than any of the countless offshoots of the Baby series. It feels like a new device, simply because it balances vapor and flavor better than its predecessors.


Each of the provided coils went through hours of heavy testing, and none showed any signs of slowing or diminished flavor. The pre-installed Q4 is actually proving to be the best of the bunch, as the flavor is extremely rich and nuanced, and the ramp up time is easily the quickest of the three. Near instant flavor and vapor came from even the most-abbreviated draws.


When I pushed the TFV12 Prince to its higher limits, it never struggled to keep up with the heat. The ample juice ports kept the coils wet, and at no point was there any gurgling, spitting or leaking around the bottom airflow ring.


Even at 120+ watts, the resin mouthpiece proved it offered more than good looks. The entire tank managed to dissipate heat extremely well, but the drip tip never warmed, even on extended draws. I swapped out a standard SMOK Delrin drip-tip from the TFV8, and the resulting draws were much warmer and even uncomfortable after chain vaping.


As mentioned earlier, the SMOK TFV12 Prince is very thirsty. No SMOK tanks can claim to be frugal, but this level of rich flavor and vapor production doesn’t come by accident. That said, I highly doubt anyone will complain once they taste and experience the vapor the Prince produces in every puff

Wrapping up… and the Score

I think it’s pretty clear I think the SMOK TFV12 Prince is a winner. Even with my concerns about proprietary coils, there’s simply no denying how strong of a performer the Prince turned out to be. I’ve always enjoyed the company’s products – some more than others – but I genuinely believe this is the best representation of the TFV series to date, with innovative design changes and a generous coil offering right in the box.


As we approach the end of the year, a lot of people are going to be mapping out their “best of” vape product lists. I already know the SMOK TFV12 Prince is going to join the Uwell Valyrian atop a very competitive list of sub-ohm tanks … and it’s going to be a photo-finish deciding which one proves to be the best of the bunch.

Score: A+

Available Now At Element Vape

SMOK TFV12 Prince Sub-ohm Tank Review – Spinfuel Vape

SMOK TFV12 Prince Specs and Contents

SMOK TFV12 Prince Features:

  • 25mm Diameter Base
    • 28mm at Widest Point
  • Hinge and Lock Top Fill System
    • Swivels Open and Shut
    • Fill Port
  • 5ml Max Standard Capacity
  • 8ml Max Convex Glass Extension Capacity
  • SMOK V12 Prince Coil Family
    • V12 Prince-T10 Decuple Coil Head
      • 0.12 ohm
      • Patented Decuple Coil
      • 60 to 120W Range
      • 80 to 110W Recommended Range
    • V12 Prince-X6 Sextuple Coil Head
      • 0.15 ohm
      • Patented Quadruple Coil
      • 50 to 120W
      • 80 to 100W Recommended Range
    • V12 Prince-Q4 Quadruple Coil Head
      • 0.4 ohm
      • Patented Quadruple Coil
      • 40 to 100W
      • 60 to 80W Recommended Range
    • Compatible with Additional V12 Prince Coils
  • Dual Adjustable Airslots
  • Stainless Steel and Glass Construction

SMOK TFV12 Prince Package Contents:

  • One SMOK TFV12 Prince Sub-Ohm Tank
  • One V12 Prince-T10 Ducuple Coil Head
  • One V12 Prince-X6 Sextuple Coil Head
  • One V12 Prince-Q4 Quadruple Coil Head
  • One Replacement Glass Tank Section
    • 5ml
  • One Convex Bubble Tank Glass Tube
    • 6ml
  • Spare Parts Pack
  • User Manual
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About The Author

All original content is written and produced for our readers by the Spinfuel Staff. The writing staff includes Julia Hartley-Barnes, Keira Hartley-Barnes, Tom McBride, Jason Little, Melanie Hendrix, and Dave Foster. Spinfuel also publishes guest contributors on occasion. All original content is protected by US copyright laws.

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25 thoughts on “SMOK TFV12 Prince Sub-Ohm Tank Review”

  1. I just got the Prince last week, and I’m seeming to have problems keeping the coils wicked. I heavily prime my coils for each type that they offer, and allow them to saturate in the tank before use overnight before I even begin to attach it to a mod. After attaching to a mod, I start with dry hits with low airflow, and slowly work my way up from 20W to my desired wattage. However, by the time I get to the wattage I want (usually around 60-90 depending on which coil) it’s already starting to burn and give me a dry throat hit, even after everything I do. It seems like the coil can’t keep up with the juice I use, and I’ve tried multiple juices and different mods. Is there anything you can recommend to make the tank perform the way that you’ve described it? Smok is awesome and I love the tank, but it seems like I can’t get it to function the way I want it to.

    1. You are doing all the right things, and the Eliquid ports are quite big for SMOK. However, if the juice you’re vaping is very high VG and very sweet, then that’s the problem.

      I had to stop vaping a couple of these $20/100ML juices for the same reason as you. Couple days at most and my throat begins to burns. But the cheap juice is so tasty it’s almost worth burning through coils. Almost.

      Sometimes it helps to drop the wattage down to the minimum range to get another day or two, or never bother approaching the higher wattage with a coil killer juice.

      Have you found the Prince-T10 coil to burn just as badly? The wattage range is wider, and keeping under the optimal high end of wattage might work for a week or so. Other than that, go with a 70/30 VG/PG premium juices like KILO or JVAPES. Flavorful, but not overly sweet. Sweetness kill coils. Any coil but all ceramic, and SMOK doesn’t do ceramic coils I hope this helps – Dave

  2. I got mine today on December 3 and I let me juice soak in for about 10 minutes but I keep getting a chemical like taste. I have switched the coil head twice and nothing has changed. Anyone have a solution for this?

    1. If you have a chemical taste it has to be your juice. Perhaps your previous coils couldn’t pick up the purity, these coils will give you the exact flavor of any juice. What e-juice are you vaping?

  3. The rubber piece on my tfv12 prince tank wont fit properly and deforms so everytime i have to fill up my tank it pops out and wont back in to place so i have to change the rubber bit all the time.

    1. Dorian, I hear this quite a bit from Vapers that don’t use these tanks all the time. If you are not careful to make sure the rubber ring is not laying flat each and every time, beginning with the first, that rubber ring will begin to lose it’s shape. Once the ring gets bent, its done with. Replace the ring, and then always, always, make sure the ring is flat before closing the hinge. If you need to, use a coin, or a nail file, to “tuck” the ring under the closing hinge. This ring is vital to the success of the tank, and its made well, especially with the Prince. If you’re having a problem with a misshapen ring, its because at one time or another, you closed the hinge and caught a piece of the ring in the process. I hope this helps – Dave

  4. This tank is not very good I burn the coils in a matter of a few days. the longest I’ve had one last was four days. This is with proper priming of the coil allowing the coil to sit in a full tank for upwards of an hour and still doesn’t help. Also i use varying juices, 50/50, and not very sweet. Have since gone back to my tfv8. I wouldnt recomend this tank

  5. Love the tank, bad experience with the coils. At first I thought the Q4 would be more my thing but after priming the hell out of it is takes almost 2 days to get it to wick correctly. I’ve let it sit overnight and it doesn’t matter, Ive done the low, slow ramp up, still takes forever. It should not take two days to get a coil to work. Once it finally did it had great flavour and lasted about a week, including the prime time. In this case it doesn’t burn but the flooding starts. So, next I tried the T10s and one is going strong for about 3 days and the other burnt out half the coils after one day. However they do wick the fastest and can use almost immediately. The 6 is just about as annoying as the Q4. Yes I use some sweetish fluids but always tone them down with another 70/30. I go about the halfway point or less with wattage so don’t get why the coils are such a long aggravating fail. I wish I could switch out to another coil that actually works and isn’t so expensive for such aggravation and short life but am considering just investing in a better set up or popping the NRG back on and shopping around. The Prince Tank Is awesome but the coils are a hot mess.

  6. I want to say firstly this forum answered all my question which would be my coils arnt lasting. would you recomend poking holes in the cotton ?? I love love my prince stick but am running into a burntish coils after a couple days. i use somewhat cheap juice which I was sorta wondering if that was the issue. should I use thick juice? I thought thinner would help . but im still a Newb. i have another prince stick on its way hoping alternating between the 2 helps keep it from burning so fast
    . what ratio of juice should I be using ?! also which coil do you suggest for the stick. thank you!

    1. I am using the M-4 on my Smok stick. With the Prince tank. What we need to be using is very high Vg. Stay away from the PG it’s not good for sub or tanks. The highest vg you can get is the best!

      1. HighVG or MaxVG are the blends we’ve been recommending for the past few years, so yes absolutely. My favorite is a 70% VG blend. Thin, high PG juice is way to rough for sub-ohm vaping.

        The thing is, there are a lot of High VG blends that are also super sweet, and while they taste great and produce huge clouds, that sweetener will kill coils faster. On on the right path. And yes, the M4 is the right coil for the Stick Prince’s direct voltage system. Enjoy! 😉 – Dave

  7. I get about 3 draws befor i taste it burning . I’ll check out some more higher pg juice ? I just seen mine are high vg. could I add pg to it?

  8. I am over the coil thing. I have invested way too much money in these tanks and coils to have such a horrble sucky experience. Hands down, these are the worst coils I have experienced. The tank is beautiful and holds a lot but if cannot smoke it, what is the point? Tired of babysitting coils. My last ditch effort was trying to prime from the inside out and again it burnt after an hour of sitting and a low temp almost immediately. I don’t use cheap juice but good 70/30 and has never caused an issue in other coils. So, forked out more money on the new Unwell and coils and will see if that is any better. If not have an NRG can go back to, where the coils are priced right, actually wick and last well longer than these pieces of crap. Prince Tank, you will get the toss right in the bin. As for the person wanting to go higher PG. I don’t see how that would help but if it helps you get anything out of your investment, might as well. I say spend extra money on something that works. It is definitely the coils which suck.

  9. Smok prince stick
    What a POS product !! This is my 3rd coil I’ve went through that was burnt as soon as I primed it and waited 15 minutes and dry hitting it and then tried it burnt my throat I’m mad all the money I threw away !!

  10. I haven’t vaped in years and I bought the Mag mod from Smok with the TFV12 Prince tank….I really didn’t prime it, just added the juice and went for it. Works great! I have had 0 issues. Hopefully I still have the same performance going forward with coil replacements. I would recommend this tank to Jesus Christ if he wasn’t busy hanging out somewhere.

  11. hands down best tank ever and i have tried all known to exist, same for coils, best ever out of 7rs finally found the perfect tank/coil. def only for 90+ vg but pg will kill ya so stay the hell away from high pg. with that said i am shocked ppl are using more than 20%pg with sub ohm, like what coil would not burn out and drop that pg on your cd and watch it dissolve the film in no time. by now anyone vaping should be ramped up to 90+vg else u may as well be analog for real man research. so glad i got this but shocked to see the comments as y’all seem to know what your talking about but common this is vape 101 stuff by now! great review, great tank, great coil, and hope y’all ditch the throat hits for your own health. yeah it sux took me a year or two to lower pg and i miss the heck out of it but in the sub ohm arena you playing with fire. you want throat hits high pg stay away from this and all sub ohm tanks:coils before it’s too late. get a pen if u chasing throat hits. these are for clouds and flavor and vg healthy pg toxic asf. but your problmes are the cheap sweet flavors with unknown toxins so check your juice if it eats a cd it eats your body. if cd film unaffected chain vape with no worries! peace!!

    1. Omg someone that agrees with me on the pg!!!! Stay away from pg all you can is what I say and not so sweet juices. But so many don’t agree with me.

    2. LOL you have to love VG fan boys going to extremes to promote their preferences. I’ve been vaping for years and try to keep up to date on (reliable) research. All information I have seen suggest there are no health differences between VG and PG (a few articles claim that PG is actually safer but the difference is so slight it really is not worth mentioning). The simple fact is, VG provides thicker vape and PG provides better throat hit and better flavor. I usually mix my juice 50/50. The best tank I’ve come across is the patriot RDA. Coils usually last about 4 months and cotton wicks last about 2 – 3 weeks. Some posters are having wicking problems and the obvious solution is to increase your PG% which wicks almost 100% faster than VG. Keep in mind you will be sacrificing some of your cloud. Maybe Rocklobzter will post a link to where he got his information.

  12. Just bought this thing. I’ve heard great things from friends that also have the Prince, but I swear, I must have went through half a bottle of juice, because this thing keeps leaking all ober my mod and hands. Primed properly, all parts tightened down sufficiently, still leaks. That’s all it does. Pretty pissed off. Just wasted a bunch of money that I really didn’t have, all because my old tank finally crapped out. I’m pretty irate ober here. I’ve done all the troubleshooting I possibly can. Read countless reviews and tips, watched ridiculous amounts of YouTube videos, etc. I’m DONE with Smok. Never again.

    1. If you don’t mind, can you tell us where exactly you purchased the Prince?

      Also, the Prince will definitely leak if the O-rings between the two glass ends are out of alignment or if the coil itself isn’t unscrewed and reseated before you use it. I have 6 Prince tanks on mods I use all the time, the only time I experienced a leak was when the coil was improperly seated. Something else is going on, so let us know where you purchased it and how much you paid. Thank you, -Dave

  13. I bought a baby prince tank and all 3 coils have drained my liquid into the air flow and all over the place. I took it back to the store they told me the coils oring was wrong. Put it back together for me and as soon as I got home it did it again. This is ridiculous. I’ve tried everything and it still does it

  14. Worst tank I ever bought. Hubby bought me the xpriv kit with prince tank for my birthday. Went through both coils that came with it and bought a few additional. Tank just leaked and leaked all over mod. Tried at least 5 different coils, multiple times and same thing. So, decided to give the RBA a shot, since was tired of throwing money away on coils. Same issue. I most use RTA’s so am familiar with wicking and watched a ton of videos on wicking this specific one. It is unusable and so much juice leaked into the mod, now mod is messing up. Waste of money. And, unfortunately, my old mod broke,so back to crappy ego aio. Really disappointing.

    1. Cheryl, so sorry this has happened to you. The only times we’ve experienced leaking in a Prince tank is when the coil head is improperly seated, and that’s only happened twice. We sincerely hope your husband didn’t accidentally purchase a counterfeit X-PRIV. They are out there in bigger numbers than most people are aware.

      If it’s not counterfeit than the tank is surely defective in some other way. Have you attempted to contact the seller? – Dave

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