Sonny ericsson cell phone stuck in flight mode

With it turned on, press and hold the power button (on the top). You shall be offered to toggle between the normal or flight modes.
Hope it works for you.
By the way, if your phone's user guide happens to be missing, feel free to download it from this location.
Anyway, please, let me know if I can help you out any further.
Regards, Carlos

Check settings - general - flight mode. It should be set to "Ask on startup" or something similar. Turn the phone off and on again. The flight mode question only comes when you turn the phone back on.

My Sony Ericsson c905 is on flight mode,i just tried to put on normal mode isn't possible.
please help me

There are 3 things you can do
1. The SIM may be slightly dislodged from the contacts and may need to be put back in firmly.
2. Your SIM may be faulty and may need to be changed.
3. You can do a complete factory reset.
I hope 1 of them will resolve your issue.

in other sony-ericsson phone's the flight mode is only showed when it's turned on!
in fact when u turn on u're phone it has 2 options( normal start or flight mode)
but it may be disabled to show the flight mode option and u have to enable it first
it's easy u'll find it in main option tab

k660i can't send texts stuck in outbox problem

1 move the text that can't be deleted from OUTBOX to DRAFTS
2 if you still can't delete it go to SETTINGS-FLIGHT MODE select SHOW at STARTUP
3 switch phone OFF and ON again. select FLIGHT MODE at the beginning. switch phone OFF and ON again
4 select NORMAL MODE if asked. go to DRAFTS and delete that message

phone should be working now

are you saving the settings when choosing normal mode? rather than just exiting out when you have chosen the mode you want. as for the charging problem just go to a local corner shop or mobile retailer and get a new charger for it. this will probably help as sometimes the little pins inside the charging unit can become slightly bent.

You have to turn the phone off and on, select the startup mode you want, to get out of the flight mode.

Sounds like your phone is stuck in flight mode for some reason. Have you tried a Master Reset (you will lose all your personal data if you do this). 

Do you get the option to select Phone or Flight modes when you power the device on?
If not, you might want to try using the scroll wheel to do the following:
1. Open the Main Menu. (Scroll to it & then push the scroll wheel in to select.)
2. Open Control Panel, then Device, then Flight mode. ("Prompt me with the Phone on or Flight mode choice..." is displayed.)
3. If the checkbox is unmarked, select it.
4. Save.
5. Power off and then on. The choice should enable you to activate Phone mode.

I hope this helps.