how to turn off "E" on the top of iphone 2g, T-mobile network?

  • Thread starter Thread starter Julian Nguyen
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Julian Nguyen

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I have problem with my iphone 2g : I am using T-mobile network, but letter "E" appears on the top of the screen and makes my Iphone losing a lot of batteries. How can I turn it off while the wifi still working

Thanks
 
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