T-Mobile is now releasing a carrier update for the Apple iPhone 5 allows a host of new important features. One of the main focuses of the update is to enable LTE on unlocked iPhones 5 units which are being used on the new T-Mobile 4G LTE network. This update would enable LTE on factory unlocked iPhone 5 units or AT&T unlocked devices. Meanwhile iPhone 5 unites with LTE already enabled will be sold through T-Mobile on or after April 12th.
The update is available for the iPhone 5 (OTA) over-the-air or by connecting your handset to your computer through iTunes.
T-Mobile Carrier Update
Version
iOS software version 6.1
Updated 4/05/2013
Available to all eligible iPhones using a T-Mobile SIM card
Features
Enables the following:
- Visual Voicemail
- 4G network indicator
- Commercial Mobile Alert System (CMAS)
- AWS LTE (T-Mobile and officially unlocked AT&T iPhone 5 only)
- HD Voice (T-Mobile and officially unlocked AT&T iPhone 5 only)
- AWS HSPA+ (T-Mobile and new 2013 AT&T iPhone 5 only)
Auto configures:
- MMS Settings
- Personal Hotspot Settings (Smartphone Mobile Hotspot)
- APN settings for LTE connectivity
My Account bookmark
Improvements
- Battery life (result of network/device optimization)
Prerequisites
T-Mobile iPhone or any officially unlocked GSM iPhone
Latest iOS software version
Device software is not jailbroken
50% battery life or connected to a power source
Data connection or a computer with iTunes and internet access
Minimum of 1 MB available memory (File size of update is ~10 KB)
Check the image below for further instructions on how to download the update
source: T-Mobile