Good news for OnePlus 2 users, an update is on the way, or you might have already got one. The OxygenOS 3.5.5 for the OnePlus 2 will bring about a lot of changes including enabling VoLTE – with this you can now use Reliance Jio SIM.
The update size is around 1.2GB. Makes sure to keep the battery level at over 75% before you continue with the update (after downloading). The handset may restart couple of times during the update, do not interrupt it.
OxygenOS 3.5.5 for OnePlus 2 will bring updated OxygenOS UI, it will enable VoLTE feature for selected carriers, add app lock, gaming mode and battery saving mode have been added, shelf have been optimized, UI and clock app interface updated, Security patch applied up to 1/12/2016, increased system stability and known bugs fixed.
Do note that after the update the phone may restore to default values and in case of network, WiFi, Finger Print issues users will need a special 3.1.0 downgrade.
For more details check the OnePlus forums.
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