my phones samsung s2 on only till the s icon show and later it goes back to o2 and again s icon apears nd this repeats ..that

Solution
Try starting it up in "Safe Mode" and see if it will load fully. While it will have limited access, then you will know that that there is something you need to remove from it. Bad app, virus, malware, etc. If, however, it keeps doing that and won't go into "Safe Mode" either, then you would have to either try a full "Hard Reset" which will wipe everything or have the phone looked at for hardware issues.

To get into "Safe Mode" please do the following.

1. First turn off the phone.

2. Next press and hold "Power" until you see the manufacturers logo on the screen, then release the power button.

3. "Quickly" press "Volume Down" and hold it for few seconds until you see the message "Safe mode: ON" or something similar.

4. If you wanted...
Try starting it up in "Safe Mode" and see if it will load fully. While it will have limited access, then you will know that that there is something you need to remove from it. Bad app, virus, malware, etc. If, however, it keeps doing that and won't go into "Safe Mode" either, then you would have to either try a full "Hard Reset" which will wipe everything or have the phone looked at for hardware issues.

To get into "Safe Mode" please do the following.

1. First turn off the phone.

2. Next press and hold "Power" until you see the manufacturers logo on the screen, then release the power button.

3. "Quickly" press "Volume Down" and hold it for few seconds until you see the message "Safe mode: ON" or something similar.

4. If you wanted disable it, simply repeat the steps above, and you should see "Safe Mode: OFF" rather than on.
 
Solution