manufacturing defect in sony xperia m

[swt]

We have sony xrepia m dual smart phone.when i set network mode wcdma (preffered)/ gsm.and when i disable the data traffic. both sim become inactive. & i unable to call by both sim. no coverage signal .The phone required to turn off & again turn on for calling. why this is so?when i select network mode in GSM above probleme is not come. both sim work excellent. & not need to turn off yhe mobile.i use 2G sim on which 3g internate pack use.so plz. guide which mode to be select on above sim ?OR can probleme in handset ?

[Uliwooly]

Contact your local Sony

http://www.sonymobile.com/global-en/support/contact-us/

[swt]

i will do this allready but problem as it is .

 can sim no 1 is only for wcdma(preferred)/ GSM ? and sim no 2 for gsm ?

i am using micro sim both, both are 2G . & internate pack is 3G.

[_alexdon_]

The phone is dual standby,which means only one sim can be active at a time and I think only one can be used on 3G.

[swt]

Dear = which sim for 3g?

 in my hand set SONY SELECT APP not working. When we open shows no network connection. But network is there. I am try many times.

[_alexdon_]

I did not see anything about sony select in upper post.Just contact your xperia care.

http://www.sonymobile.com/global-en/support/contact-us/

[swt]

 Dear = which sim for 3g? sim 1 or sim 2,

i have xperia m dual.

[_alexdon_]

I think the first sim.

[Sam]

Please also be aware that when you alter the network mode is is normal for you to drop signal for a short time whilst it re-establishes connection. However if this continues for more than a minute then I would agree that there may be a problem.

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[swt]

 ok  thanks