The previous OnePlus 3 was already the best phone for the money, and while the 3T's $439 starting price has upped the ante a bit, improved performance and an extra 2 hours of battery life are worth the extra $40.

Excellent battery life; Great performance; Superfast Dash charging

Limited to GSM carriers; Display could be brighter

But now you can't buy the OnePlus 3. Instead, OnePlus has decided to replace it with an even better version: the OnePlus 3T. The 3T shares many of the same qualities as the 3, including the same materials and design; same size and resolution display; same 6GB of RAM; and same rear camera.

Great build quality; Fast processor and performance; Long battery life

Doesn't work on Verizon or Sprint; No certified water resistance; Quick charging limited to included cable and power brick

Well that went quickly-the OnePlus 3 was a great phone, and when you don't change much, there isn't much to talk about. We doubt anyone would notice the camera and performance changes between the 3 and the 3T, so at the end of the day, you're really paying $40 for more battery life.

$439 for a 64GB phone is a fantastic price; The aluminum unibody is still great; Speedy SoC (a Snapdragon 821) and surprisingly speedy storage; just like its predecessor; It still has all the right extras: a fast; accurate fingerprint reader; USB Type-C; and NFC; Customizable; lightweight Android...

No MicroSD slot; Slow monthly and major Android updates; If you're going to upgrade a camera; upgrade the rear one

It's not quite as bargain-tastic any more, but the 3T still packs performance where it counts

Still great value; A little bit more power; Fab design

Selfie camera not much of an improvement; Battery life doesn't seem to have increased; Significantly pricier than the OG OnePlus 3

OnePlus has come a long way since the invite only days of the OnePlus One and OnePlus 2 . At $440 the OnePlus 3T is the most expensive phone the company has ever made, but it's also the fastest.

Relatively affordable; Fast performance; Attractive metal unibody; Solid front and rear camera; 10+-hour battery life; Clean UI and highly customizable software; Larger storage model available; Dual SIM cards

Same screen resolution as the OnePlus 3, and less sharp than the competition; Lacks waterproofing and expandable storage

It has usually been Apple who can get away with incremental changes to their flagships. OnePlus have learn't from the master of the game. And so six months after the OnePlus 3 made waves in the mid-range market, the disruptive manufacturer is back.

Top line processor; fantastic looks; Good battery; latest Android; Under-£400

Incremental changes since OnePlus 3

The OnePlus 3T is an excellent smartphone. The fit and finish is right up there with the best, the metal design is refined and even with a 5.5in screen, it's a manageable smartphone to use on a daily basis.

all-metal; great fingerprint sensor; good screen; fast charging; good cameras; excellent notification slider; dual-Sim with dual standby; cheaper than rivals

not quite as cheap as it once was; no removable battery; no expandable storage; slow charging from non-Dash charge power adapters; screen low res for VR; not yet running Nougat

Looking to pick up a top-end flagship phone without spending in upwards of $600 or more Want the latest in mobile chipsets and the performance that goes with it, but don't want to break the bank

Significantly improved battery life over the OnePlus 3; Dash Charge is as fast as ever; Amazing build quality; Hardware priority mode slider is genius; Vibrant and beautiful AMOLED screen; Top-tier performance; Light Android skin with some nice added features; Unbelievably fast fingerprint scanner,...

No high-res audio or Bluetooth aptX; No Daydream VR support; Launching with Android Marshmallow instead of Nougat

With a better processor, battery, and front camera, the OnePlus 3T is a tune-up of an already great phone.

Great specs for the money; Larger battery ensures a full-day's charge; Adds 128GB option

Costs $40 more than the OnePlus 3; Higher-resolution front camera doesn't add much to selfies; Still no Verizon or Sprint support

The OnePlus 3T is really not a big upgrade to the OnePlus 3, but it still a good performer, and value for money smartphone

Class leading performance; Premium build quality and design; Super fast to charge; Good display

One day battery life only