When I switch on my doro 612 it is vibrating continuously is this a fault ??

Question moved from MISC to correct category.

Hello Carol
The first thing to do is contact your Phone Service Provider and check that you have a text service in operation and that you have credits available. Also International texting needs authorization on most plans.

It is a known issue on that phone

https://www.google.com/search?q=doro+phone+easy+612+not+sending+text+messages

..

https://phones.brain-start.tech/block-phone-number/how-to-block-a-phone-number-on-doro-phoneeasy-612/

How to block phone number on Doro PhoneEasy 612 Phone Info

Quoting from link: "Start by going to "Contacts" and tap on the contact you want to block. Then, press the menu key at the top left of your Doro PhoneEasy 612. You will see a menu where you will select "Block Number" or "Add to Auto Reject List". The title may vary depending on the model you own."

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if you have no service most cell phones revert to emergency calls only. Check cell phone is validated correctly with network provider

check there site
Doro PhoneEasy 612

Hi -- I had this problem a few months ago. I found that if I took the battery out, let the phone rest for a few minutes, then put the battery back in then rebooted the phone. I did this a couple of times then the problem mysteriously disappeared. I hope this helps

Perhaps you go back to the shop you just bought the phone and ask to explain? Will be much easier than we try to type over the user manual, you apparently don't want to open and read.