Depends on the phone of choice, but usually you're looking for the master reset option.
Nokia n86
Go to Setting's and format phone then format all phone
how to format nokia 3110c phone memory ?
When you install a memory card, you have to format it with the phone format.
*#7780# nokia 3110c phone memroy format
how can i format 6600 nokia
Reset is going back to original manufacturer's setting of your phone while format is erasing whole data on your phone.
how can format the 7210 superenova mobile
what is the code for format 6280 phone memory
Sony k770 phone format code
The file format for any mobile phone theme is likely to be a closely guarded secret of the phone manufacturer. for that reason converting a theme created in one format to the file format used by the phone is unlikely. The phone you have should give you access to the all of the themes available from the manufacturer.
Phone numbers should always be stored in a text format and never as in a number field. There are several of reasons for this. You never do calculations with phone numbers; you may have a zero at the start of a phone number, which would disappear if left in a number format and you may, as in this case, have other characters in a phone number that are not digits, which would not be accepted in a number format.
You press options and click on the ringtone and press send to phone. then type in phone number