May sagot ako diyan boss!
first check your IMEI on your phone.
Pag unavailable , well maybe that's your problem:
Solution
Dial: *#06# ( to get your IMEI or kung wala check your google account makukuha mo dun yung IMEI mo by device)
Then
Dial :
*#7465625# or
*#*#3646633#*#*
Then : Connectivity
-CDS Connection
-Radio Information
Ok now if you are using Dual SIM card android phone then you will see two different options like…
IMEI_1{SIM01} & IMEI{SIM02}
Now, change it to AT +EGMR=1,7,”
IMEI_1” and “AT +EGMR=1,10,”
IMEI_2”
"IMEI_1" - lagay mo dito yung IMEI mo
then hit enter or send ata yun HAHAH!
then ayun
check mo ulit kung may IMEI na by *#06#
kung di parin gumagana.
Try to check your SMSC number
How?
first go to messaging(yung pangtext mo)
second go to settings
third go to Text(SMS) messages
then find SMSC setting
there put +639180000101 (for tnt)
then click ok.
well, hoping na gumana yung sinabi ko btdubs:
Kung wala talga baka sira na sim port mo

Worst case scenario