Carrier Aggregation Toggler
Today I am releasing a utility that will enable or disable LTE Carrier Aggregation (CA) on the SM-G900T. This is intended for users on the rooted stock rom only. T-Mobile does not currently use carrier aggregation. Therefore, this is for users who have unlocked phones and are on other carriers such as AT&T. Use this software at your own risk on devices other than the G900T!
What is Carrier Aggregation?
Carrier aggregation is the first step in LTE Advanced commercialization, offering increased user data rates for all users in the cell. The higher data rates can also be traded off to offer increased capacity for bursty applications such as web browsing.
$ adb push ToggleCA.apk /sdcard/ $ adb shell $ su # mount -o rw,remount /system # cp /sdcard/ToggleCA.apk /system/priv-app/ # chmod 644 /system/priv-app/ToggleCA.apk Then restart your device and launch the CA app.
1. Ensure the device is on LTE 2. Dial *#197328640# 3. Select AS 4. Will either say CA is disabled or enabled
$ su # am broadcast -a android.provider.Telephony.SECRET_CODE -d android_secret_code://27663368378
 UE SETTING & INFO  SETTING  PROTOCOL  AS  RELEASE VERSION  LTE 3GPP REL/CA CONTROL  LTE 3GPP REL 10 REBOOT!