@ c6em, kitz, & Berrick
Thank ou for your suggestions. I should have mentioned that I had done the factory reset, which is, as Berrick mentioned, pinhole button next to the power on/off switch. After that I still did not get any joy. So, either the product is u/s or it is locked-in to an ISP. Unfortunately, I did not query with the seller prior to the purchase, which ISP he was with. Now that I have got it I don't think he would be interested in responding to my query at this stage.
So, any further help will be appreciated.
Many regards,
Archie.