Please help me. network mobile failed..

[fares_alg]

I get a new xperia z1 with JB 4.2... But when l take it from my pocket I find that is no network witch be back after few seconds.... The same problem when I update my phone to JB 4.3 :'(

[Johan]

Hi and welcome to the community! Since you're new please be sure that you have checked out our Discussion guidelines.

Which networks are available in your area and for your SIM card/subscription?

I suggest that you set network mode corresponding to the networks available.

Settings > More (Wireless & network) > Mobile networks > Network mode.

But if this still happens try changing the SIM card and check if you notice any difference.

[fares_alg]

Thank you Johan happy to your welcome... Yes l was trying what you suggested but no changes. I am from Algeria and my SIM card is Ooredoo (Nedjma). I didn't change my SIM card because it's work very good with another phones....