The stock recovery menu that ships with Android is pretty useful if you need to apply an update via ADB or SD card, or perform a factory reset. Other than a few additional options and settings, though, there isn't much you can do with it. That's where custom recoveries come into play, and TWRP is one of, if not the most, popular custom recovery available. There's good news on that front: A lot of devices have received official support for TWRP recently.
Here's a list of phones and tablets that are now officially supported by TWRP, courtesy the TWRP commit history:
- Samsung Galaxy S4 Mini
- Samsung Galaxy A3 (2016)
- Samsung Galaxy A5 (2016)
- Motorola Moto Z2 Force
- Sony Xperia Tablet Z
Sometimes, developers port ROMS, utilities, and custom recoveries like TWRP to new (or even old) smartphones unofficially in alpha and beta states. Often, these are the only versions available for very obscure devices. But in the case of TWRP, if the developer in question achieves a certain level of stability and polish with a given phone or tablet, the TWRP build becomes eligible for approval and publication on the TWRP.me website as an "officially supported" version.
XDA threads for TWRP indicate this change with an "official" label. They're not always radically different from unofficial versions of TWRP, but they're usually been tested more thoroughly.
Along with the recent additions, the maintainer of the OnePlus 3 TWRP maintainer has changed. XDA Recognized Developer dianlujitao is the new maintainer for the unified OnePlus 3 and OnePlus 3T TWRP custom recovery.
You'll find all of the official TWRP threads for the newly supported devices at the sources links below.
TWRP for the Samsung Galaxy A3 2016
TWRP for the Samsung Galaxy A5 2016