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Help I can't switch my network to WCDMA only

F

feelsad

Newbie
i have question to ask about my network mode ... when i switch to WCDMA only , it only show there is no coverage and after that , in a few second it automatically change back to GSM/WCDMA auto .... however , when i change to GSM only ... it does not change back to GSM/WCDMA auto ... it seem like i can't switch to WCDMA only ... morever , i also have tried compared with my friend which also DHD user ... both of us using the same network .. when we switch our DHD to WCDMA only .. look like my DHD only change back to GSM/WCDMA auto just in a few second , and my friend DHD look like it maintain with WCDMA only and does not change back to GSM/WCDMA auto ... do you have any idea ?

really2 want to solve it bandly :( .. thanks for read my problems ...
 
i have try it just now ... but it still did not work ... when it set WCDMA only as preferrend , there only show there is no network coverage .... and in a few second it change back to WCDMA preferred .. as i know , even there is no network coverage , the network that we choose will never change back to GSM/WCDMA auto , unless we change it by our own .... what should i do ? .. it look like my DHD only can use GSM network ... do i need to download some software or something ? .... or install some file to my DHD ...
 
i have question to ask about my network mode ... when i switch to WCDMA only , it only show there is no coverage and after that , in a few second it automatically change back to GSM/WCDMA auto .... however , when i change to GSM only ... it does not change back to GSM/WCDMA auto ... it seem like i can't switch to WCDMA only ... morever , i also have tried compared with my friend which also DHD user ... both of us using the same network .. when we switch our DHD to WCDMA only .. look like my DHD only change back to GSM/WCDMA auto just in a few second , and my friend DHD look like it maintain with WCDMA only and does not change back to GSM/WCDMA auto ... do you have any idea ?
 
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