Nokia E75 Call not Allowed Cannot make or receive calls. Do receive sms and emails.

You may need to ensure pop access is enabled in your yahoo account before you can use it on your device.
Here is a link to their support section on enabling pop access.
https://help.yahoo.com/kb/enable-pop-access-sln22038.html

take it to a service station

I open the web "www.ulnokia.com" taking them at face value that it was a "free unlock mobile service". They took me from page to page saying I just had to respond yes by SMS (on the mobile I was using) and After >1 Hr "No Code" but only ~ US$30 taken out of my mobile account. I later tried to reason with them on the phones they had provided by SMS: 19900100 (some subscriber service) This charges you everytime you SMS or they SMS ~$5/msg??; 1300792486 (so called customer service?) Never responds but charges for every SMS u send or receive like the first one!!. 1990002 (i dont know what this was but certainly charged me money too!).

In conclusion be careful in my opinion these are web thieves!!...Try to find the source of their website (apparently USA??), try to contact them...by Phone (only SMS $5/msg allowed, no email??). You decide if dont believe me try their website and follow through!!!...Hopefully one of you is an audit Officer!!!

Restore yours mobile phone from setting password may be 0000 or 1234, 1221,2112,1213,2142 now you are able to send sms anywhere

Dear,
Check your Message Center No.

If your phone not responding, I think you should reset your phone. But before you do this, make sure you have put off your SIM and memory card from the phone, and make a back up of your data.
There are three steps of resetting the phone :
Nokia E75 Soft Reset:
This option restores the .ini files from the ROM.
Does not erase data (photos, videos, documents) nor applications from a third party. Key Code *#7780# (click this combination of keys on the keyboard in the mobile)
Nokia E75 Hard Reset:
This option restores the original operating system from the ROM.
Formats the C: partition and deletes all data including the memory card. Key Code *#7370# (click this combination of keys on the keyboard in the mobile)
You can also achieve Total Reset by pressing and holding down following keys: * + 3 + Green Button (call) immediately after turning the mobile on.
Note: To proceed to reset, the battery must be full and the
mobile device connected to the charger. If during the course of reset, the mobile stop receiving electricity it can ruin the internal flash memory of the mobile device and stop function.

Or you can check this sites :
http://anythingnokia.com/nokia-tips/nokia-e75-full-reset-soft-reset-and-hard-reset/

http://discussions.europe.nokia.com/t5/Eseries-and-Communicators/Reset-E75-using-7370/m-p/540002

Hope this help and be kind to rate this answer, thank you.
(^_^)

Check your sms service center number in message settings. get the right centre no. If problem persists take help from nokia service center.

Sir i am using Nokia E75. My IEMI Number is :359557017656626. I forget my lock code . plz help me to unlock my phone. my email id [email protected]

Help me.. i forgot my lock code e75..IMEI ;359557012178683.my email [email protected]

I installed Kasperky antivirus software which my phone is not compatible for this software therefore when an incoming sms was received it would scan the sms & in doing so automatically power off/ on my phone. I uninstalled the antivirus software & it solved the problem