AT&T Community Forums

Error Invalid Number. Please re-send using a valid 10 digit mobile number or valid short code

Hey, so my friend got a Galaxy s6 edge yesterday and gave me his new number. When I tried texting it I received this immediately after:

Error Invalid Number. Please re-send using a valid 10 digit mobile number or valid short code. Hey

I can receive messages from this number as well as calls. I've become aggravated and am not sure what to do. Please help, thanks!

Responses

Accepted Solution

Official Solution

ATTMobilityCare

Community Support

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15.2K Messages

9 years ago

Hi there @Launiusj

I’d be happy to help with this messaging error! This will be due to the device storing the number incorrectly. Please do the following to resolve the issue:

Ensure the phone number is stored as only digits. Don't include dashes (-) or parenthesis (...)
Delete texts from both old number and new
Delete any call logs including these numbers
Delete old number from contacts
Delete new number from contacts
Restart device
Send text to the new number directly (do not save as contact)
Once the text sends successfully, you can then save as a new contact

I hope this helps!

Charise

(edited)

1

A

Ava

New Member

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1 Message

Do these steps work with an apple phone?

Like

4 years ago

0

NiecieD

Contributor

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3 Messages

9 years ago

just started happeneing to me...none of these "solutions" work.

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ATTDmitriyCM

Former Community Manager

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10.4K Messages

9 years ago

Hi @Launiusj

Were you able to get your issue resolved? Please let us know if you still need any help.

Thanks,

Dmitriy

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Jang0622

Contributor

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1 Message

9 years ago

Hello. I'm Galaxy S6 edge user. I deleted everything but it is still not working. I can't send a message. I can text evreyone except only one contact. Plz help me. This is important for me

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Dawnmec

Tutor

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4 Messages

9 years ago

I finally figured out why my android phone keeps dropping the area code and failing to send the message when I text a contact! It's because the contact has parentheses around the area code. Please don't use parentheses - that's the OLD days. Just delete the parentheses around the area code in all your contacts, make sure it saves, and delete the old thread that with the missing area code. YAY!

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Dawnmec

Tutor

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4 Messages

9 years ago

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Sheralee

Contributor

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2 Messages

8 years ago

Accepted Solution

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akoxeno

Scholar

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147 Messages

7 years ago

I am getting the OP's error message when trying to return an SMS from an international number. (The sender is Android, I am iP.) Of course, the international number has 11 digits but whether I start with + or 011, the result is the same.

I don't know how to determine a "short code" that could resolve this issue according to the error message. How does one determine something like this?

The error message is sent from +1(1) (216) 116-11

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Fpendergast

Contributor

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1 Message

7 years ago

This didn't help me.

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theljperez

Contributor

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2 Messages

6 years ago

I’m experiencing this right now. I’ve been saving contacts the same manner ever and able to message my friends, but now I am having a hard time for these two contacts. Help!

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