sorry for my bad english first,I'm Chinese,come from Hong Kong
my mobile carrier is Mobile virtual network operator (NVMO),two days ago,they change the mobile network from A to B.
when I use network A,it can show a symbol in status bar such as GPRS / E / H / H+,so I can know the phone is using 2G or 3G network and the speed very easy.
but right now,change to new network B,it shows nothing,only have a signal bar and show (R) ,R is roaming,my MVNO carrier network is a roaming network,but anyway,there is no symbol GPRS / E / H / H+ again,it is very inconvenience to me...
I change other mobile sim card to my phone,it show H+ / LTE immediately,(I've been test 2 sims,it can show the correct symbol.)
Can I get back the GPRS / E / H / H+ symbol through some system internal setting?
my network B can completely access the internet,I can see the connection type in "About Phone"->"Status"->it shows "HSPA" / "EDGE",but the symbol in status bar is gone
please help,thanks so much!
my phone is Sony Xperia Z,C6603 4.3 jelly bean and rooted,build number 10.4.1.B.0.101,and I didn't unlock boot loader.