Is thee any way to perform a find-and-replace in contacts? I want replace a letter with another one in all contacts texts. (My device is an Xperia Mini Pro Android 4.0)
You can export the contacts from gmail, than edit in whatever editor you want and than import back to google. Your phone should then update the changes.
How to export from gmail:
and how to edit the CSV files:
There are also related links on the left (for import and other questions)
If importing them back to google makes duplicates, remove all google contacts and then import from CSV.
If your phone does not currently use google contacts sync for it's contacts you can try a similar "hack" by exporting contacts to the SD card and then importing them back.
As Mihic mentions a "similar hack" to process your accounts without Google:
The resulting export file stored on your sdcard is in
Having finished that, you can import the resulting