Oops! Sorry, we couldn't send an SMS to your phone.

[Underkingz]

So last night I wanted to to switch my Steam Guard Authenticator over to my phone to avoid the 72 hour trade hold. After I entered in my phone number, they said they sent me a code I needed to enter on my phone. The problem is I never got these codes, and after re-entering my phone number 3 more times hoping for new codes, it gives me this error that says, "Oops! Sorry, we couldn't send an SMS to your phone" and shortly after that I got all of the SMS codes all at once, but now I can't get past the error screen to enter these codes. I waited until the next day to try it again, but I'm still getting this error. What am I supposed to do?

[The Giving One]

I'm not receiving SMS messages!

If you are unable to receive SMS messages from Steam, check with your wireless provider that your wireless account is allowed to receive them. Steam will also stop sending SMS messages if too many have been sent to you, so waiting a few minutes to an hour may allow messages to come through again. You should also check to make sure that your phone's inbox is not full.

https://support.steampowered.com/kb_article.php?ref=8625-WRAH-9030#nosms

My authenticator codes aren't working!

If you are unable to log in using the authenticator codes:

Check the time on your phone and make sure it is accurate. The authenticator codes are generated using the phone's time, and if the time is off, the codes will be incorrect.
If you have more than one account with an authenticator, make sure you are entering codes for the correct account.

You can remove the authenticator from the account; see the section below on authenticator recovery.

[Underkingz]

The Giving One님이 먼저 게시:

I'm not receiving SMS messages!

If you are unable to receive SMS messages from Steam, check with your wireless provider that your wireless account is allowed to receive them. Steam will also stop sending SMS messages if too many have been sent to you, so waiting a few minutes to an hour may allow messages to come through again. You should also check to make sure that your phone's inbox is not full.

https://support.steampowered.com/kb_article.php?ref=8625-WRAH-9030#nosms

My authenticator codes aren't working!

If you are unable to log in using the authenticator codes:

Check the time on your phone and make sure it is accurate. The authenticator codes are generated using the phone's time, and if the time is off, the codes will be incorrect.
If you have more than one account with an authenticator, make sure you are entering codes for the correct account.

You can remove the authenticator from the account; see the section below on authenticator recovery.

The thing is I've waited a full day to retry this, and I'm still getting the error screen. That, and it's not that the codes were incorrect, but that I didn't get these codes until I was locked out, and now I can't get back in to enter any of the codes to find out if they worked or not.

[The Giving One]

Sorry if that was not helpful, so see if this guide can help you. It was made by the good Satoru.

https://steamcommunity.com/sharedfiles/filedetails/?id=495405494

Make sure your inbox is not full.
Make sure your phone time is correct.

[Krim]

Same problem here. I'm locked away with that error. Geez.

[Kloasaurox]

the giving one... dude were not that stupid. IM NOT GETTING THE CODE SEND TO MY 4G LTE UNLIMITED DATA IPHONE 6

[shiel]

Schlumpf님이 먼저 게시:

the giving one... dude were not that stupid. IM NOT GETTING THE CODE SEND TO MY 4G LTE UNLIMITED DATA IPHONE 6

First of all, we don't know how "stupid" you are (your word, not mine). Second of all. Did you check the time on your phone as he asked first? Third, did you read the guide you were linked?

[Halcyon]

The guides are vague. The video's don't help. Valve needs to do much better than this sloppy broken mess.

[Halcyon]

I have the EXACT same error. And it seriously pisses me off.

[Halcyon]

Also, I've been trying for 30 minutes to get it to work, I have about 5 steam links and email account links open, and my phone is filled with messages, it should not take this long to get a ♥♥♥♥♥♥♥ fake item approved to sell.

[desolation0]

The problem is not with the Steam Guard codes themselves, it is with the phone authentication step to set up the Steam Guard codes to begin with. As part of the process, you attach a phone number to the Steam account in question. Steam then immediately sends out an SMS code to confirm. These folks are getting an error message that Steam was unable to send that message, even if they did receive the SMS code. The error message screen does not allow them to enter the proper code, even if one has actually come from Steam, so they are stuck.

The time on the phone does not matter in this regard. Nor is it likely that their text message service was full at the time, as they tend to either have a ton of space or delete messages by first-in-first-out. Unlike voicemail there is generally no reason you can't receive the latest message. My first guesses go like this. Either there is a Steam-side limit on the number of SMS that can be sent to one number in a particular period, or a limit on the number of accounts associated with a particular number. For some reason you have tripped one or the other. If you have already waited out any clock, best bet is to probably open a ticket and see if they can get you through the process, in case a flag is inappropriately stuck tripped.

[g]

i have the exact same problem. iphone 6 on verizon, unlimited everything (except no unlimited 4g because amurica lul). i called verizon for over two hours - escalated to the highest level of support - zero blocks on anything on my account (i receive short messages for all my bank accounts, etc).

this is clearly an issue with steam, and they are being lazy and not looking into it. i already raised a support ticket over a month ago - the first respondent replied asking if i want an exchange for merchandise i purchased. they don't even read anything. actually so stupid.

if anyone has any logical ways to fix (i've done everything in this above guide), please help. all i want is to enable prime matchmaking and sell my hundreds of dollars of inventory to buy stuff.

[Yushue]

Ah! i found a fix. simply wait 1 week.

[FairwayNinja]

This is seriously stupid, same problem here Phone carrier says they are doing nothing to prevent it, and check the time? seriously? this is 2018 we don't get to set the time on our phone our carrier does and of course it's correct

[PvN : Live on youtube]

*FIX*
THE ONES WHO ARE HAVING THIS ERROR
"Oops! Sorry, we couldn't send an SMS to your phone."
>go to your STEAM settings on your PC
Accounts >Manage Steam Guard account security >
>click for Mobile Authentication and click *Done* on the End of the page

>Go to your mobile steamguard and then try to send your code through your mobile number

You're Welcome
~GL HF bois and grills

[MrLuckyPOV]

THANK YOU ^ (finally worked :D)