SecRO or SRO from Alcatel is an alpha numeric code required in order to calculate the unlock code for your handset.
To locate it, simply type either one of the following sequences and press dial as if you were calling a regular telephone number:
- Power ON the Alcatel phone.
- open dialer and enter *#837# or *#3228#.
- Scroll down and look in the list for the SRO number starting with “X.” (e.g. XG55NBG3)