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Go Back   GSM-Forum > GSM & CDMA Phones / Tablets Software & Hardware Area > Samsung > Samsung Android based phones


Samsung Android based phones Discussion and all of your questions relating to the Samsung Android based phones.

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Old 03-19-2019, 19:24   #1 (permalink)
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Problem with j337u can't make call, shows error: Call not sent


Hi, i have a j337u and when i try to make a call only shows an error saying "Call not sent" even when it shows carrier name on the notification bar and full signal bars.

Any help?

Thanks
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Old 06-12-2019, 16:07   #2 (permalink)
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Found a way to get phone working. Factory Reset phone. when it loads setup, go through setup but don't connect to wifi. Enable usb debugging. KnoxGuard Unlock. Then connect to internet. App should be disabled.

This should Work.
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Old 06-12-2019, 18:55   #3 (permalink)
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Hi, do you know how to do a KnoxGuard Unlock to this phone? Regards
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Old 06-13-2019, 14:47   #4 (permalink)
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I used Chimera to perform the Knoxguard unlock.
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