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Error Invalid Number message when sending text

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Error Invalid Number message when sending text

Ever since I upgraded to an iPhone 5s I get an Error Invalid Number message when sending a text to a phone number that used to work just fine from my 4s. In fact I can receive a text from this number but when I try to reply to that text I get the error message again.

I deleted the contact info in case there was something broken there and I'm trying it with just the raw phone number but without any luck. What can I do? It's my boss's number so it's important I fix this problem.

 

All other contacts and texts are working just fine, it's just this one phone, a Samsung galaxy on T-mobile if that helps. 

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Message 1 of 106
Community Support

Re: Error Invalid Number message when sending text

Hi there @andyjhunter

 

I’d be happy to help with this messaging issue! This is a somewhat recurring bug for some iPhone users. To resolve this issue:

 

  • Take down the affected number, as we’re going to delete it from the device
  • Delete the contact from the device
  • Delete any messages from or to this number
  • Delete any call logs that include the affected number
  • Go to Settings > General > Reset and choose Reset Network Settings
  • When the device powers back on, send a new text to the affected number BEFORE creating a new contact

 

I hope this helps!

Charise

AT&T Customer Care

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Message 2 of 106
Contributor

Re: Error Invalid Number message when sending text

Nope. Still didn't work. I scoured my phone for any trace of the number; contacts, texts, call logs and got rid of everything. Reset the Network Settings and tried to text the number manually, I got the same error message as before.

Message 3 of 106
Contributor

Re: Error Invalid Number message when sending text

I have just experienced this problem.  I have an Iphone 6 Plus and I was unable to send a message to someone standing right next to me.  I could receive his text, but I could not reply back to his message, nor could I send him a message.  I kept getting "Error Invalid Number.  Please re-send using a valid 10 digit mobile number or valid short code."  I tried with the area code, taking the area code out...nothing worked.  I could call him using the same 7 digits but to texting.

Message 4 of 106
Contributor

Re: Error Invalid Number message when sending text

I'm having same problem on the iPhone 6 plus tried all of the above mentioned and still won't work and the phone I'm texting TO is a note 3 from tmobile but is unlocked and currently on AT&T
Message 5 of 106
Contributor

Re: Error Invalid Number message when sending text

I am having the same problem on a Lumia 830 running windows 10

Message 6 of 106
Contributor

Re: Error Invalid Number message when sending text

I'm having the same problem on the Nokia Lumia 920 with Windows 8.  I was able to text yesterday with no issues.  Now all of the sudden I get the error regardless of who I text.

Message 7 of 106
Contributor

Re: Error Invalid Number message when sending text

I'm also having this problem on a Windows Phone. Just started in replies to other messages this morning. :/ Tried deleting and re-adding contacts, and it still did it once I replied to their message. It replies with the error, but in the error message, it adds 11 to the ten digit phone number that is actually stored in my phone.

Message 8 of 106
Contributor

Re: Error Invalid Number message when sending text

Having the same issue with my phone apparently adding "11" to a contact.

 

Nokia Lumia 920

Windows 8.1

 

This is a contact I regularly text.  If I delete the thread I can send a text, but soon enough I get an the error message.

 

Tried texting 2 other contacts, no issues.

Message 9 of 106
Contributor

Re: Error Invalid Number message when sending text

This is happening to me this morning on replies, too.  Lumia 520

Message 10 of 106
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