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It is likely that the phone has 'dropped off the network' or your message centre number has been accidentally changed.
The phone periodically sends a signal to the network to keep the network updated with its location. That way, when a call or text is made to your phone, the network knows which CELL to send the signal to (the last CELL place the phone was found in). If the network has not received a signal from the phone saying it is being turned off or has not managed to keep the network updated, the network will not deliver a text although this should not affect sending texts (in theory).
To get it working again, there are a few things to try:
1. Remove the battery without turning the phone off, remove the SIM and power up the phone. When the phone has started, turn it off, re-insert the SIM and start the phone.
2. Go into Network Settings and manually try to connect to another network and when it fails, set it back to automatic.
3. Temporarily put your SIM into another phone for a minute (you could get lots of texts coming in so read them before you put the SIM back into your phone.
It is frustrating when only your phone cannot send text messages no matter how strong the network signal is. Sometimes you feel nobody cares about or remembers you because nobody calls or texts you but actually there are. Your phone just can't be reached or can't receive text messages. When these happen, turn off the phone; remove the battery and then the SIM card. Insert the SIM card to another phone and try sending text messages; if you still cannot send text messages, remove the SIM card and let it sit off the phone for at least fifteen minutes then insert it gain. You should be able to send text messages after that, but make sure you have credits.
The next thing you should look into is the phone. Make sure network signal is present then insert a known good SIM card in your phone and try sending text messages. Reset the phone if you still cannot send text messages, but back up important files and data, such as contacts, videos, images, and messages, before doing so.
One simple way to "reset" the phone is by removing the battery and letting it sit for at least fifteen minutes. Another way is by restoring the phone settings to factory settings. Simply navigate to settings then phone settings and select "restore to full factory settings" depending on the brand and model of the phone.
This tip is not intended to solve virus or firmware problems but rather to avoid unnecessary visit to the service center and save few bucks from a problem only caused by a simple electronic glitch. Check the network signal strength and your credits before jumping into any conclusion.
there are several factors why you are unable to send and receive messages and make outgoing calls and receive incoming calls.
network issue: are you the only one experiencing the problem? try to check with someone who is on the same location and is using the same network as you if he or she is experiencing the same problem as you. if yes, then it may be a problem with your network.
make sure that you have good signal and contact your service provider too and ask them if they have an ongoing maintenance in the area and ask if the sms and calls services are activated on your account
phone issue: if you have a good signal and still can't send, receive text messages, do and receive incoming, outgoing calls, try to do these: call the service provider and ask for the default network pin, then go to the settings of your phone, call settings, call barring, deactivate all barring
try inserting your sim card to another phone and try to send an sms
turn off your phone, remove battery and sim card and then wait for a few seconds, then put back the sim and battery and turn on the phone then try to send an sms
try this... 1st Make Full Eprom Reset *2767*3855#
After Rebooting Mobile.
3. Type *7465625*638*00000000*00000000# then power OFF phone &
4. Type #7465625*638*00000000# (to permanently unlock the phone) then
power OFF phone & restart again
hi, the antena of the phone i.e your palm centro is bad that is why...you will need to change the antena before you can get signal, because without signal you can send text messages or make any calls..