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If even after your deffaults were loaded the ringer does not work then it is possible that there is an hardware issue. You will have to open the phone and probe within for possible failure of the ringer / buzzer, the connections. If your ******** is working then it is possible that the ringer is faulty and must be change. But if any of these are not working then you might have to check the board for confirmation. Use a good multimeter to confirm the continuity of the buzzer/ speaker and the connections / connectors. Hope you get this right. Good day
First you’ll need to get your Network Control Key. The Network Control Key is a 8 digits unlock code. There are two paths to get your NCK. You can either call AT&T or ask for it. You may have to ask them to put you through to their tech department. If you’ve never signed up for AT&T’s Service they may not give the code because your not a customer. The other way to get the code is to contact a cell phone unlocking service. They usually charge around $20 to get this code for you.
Once you get the Network Control Key power off the phone.
Please try to power cycle your Samsung BlackJack. Please remove the backlid and remove the battery. Now plug in the charger and after that the battery. Now leave this phone for approx 1 hour. Now try to turn it on.
I hope this helps but if does not even help you need to contact Samsung for a repair.
Please do rate my solution.
This is actually a bug in the BlackJack II's firmware. If you power the BlackJack II off, but you're unable to power back on, try removing the battery for about 10 seconds, then reinsert the battery and power back on. The power button should work now.
(At the moment there's no permanent fix for this.)
Does that adequately resolve the issue?
Are you turning the BlackJack II off to conserve battery? While flying? Something else?
Scroll down to where it says phone off. Then hit OK or the middle button on the fromt side circle. Go to turn phone on. Wala...if that does not work try selecting your network from the -start-settings-phone options- network-then select your network
Here's how to edit the ring settings for any function:
1. Start Menu
4. Select the profile you want to change by scrolling down then Clicking Menu (right soft button) and Edit
5. Scroll down to Notification Type and choose Vibrate or None if you want to silence it