3g not worked

[koedzumi]

Problem with the transmission of data in wcdma. When I turn on wcdma only mode after a few seconds the signal disappears.
On other devices with my SIM it works. I think the problem in cell antenna???

[Uliwooly]

1. Do you have the correct APN settings ?

2. Do you have a micro SIM card or did you trimmed a SIM card? 

3. How good/bad is your 3G coverage? 

[koedzumi]

1. The apn settings is correct
2. I have a micro SIM(not trimmed)
3. The 3g coverage is good.When I put my sim in devices from other manufacturers all works well

[Uliwooly]

Try the basic 

1. repair your phone with SUS or PCC

2.  get a brand new SIM card 

3. if neither 1 and/or 2 work then take it to a Sony repair center