[e-mail]

[Bazsika]

Hi, Steam
Please could someone help me ?? Guardo on the phone? I lost in the old simcard was and I can not phone to change to please someone help

[Tev]

Please remove your e-mail address from the topic title. You don't want to post that on a public forum.

As far as your phone number goes,

Contact your carrier and request a new SIM-card with the old number, or contact Steam Support to get your old number removed.

Alternatively,
You could also try going here:
https://help.steampowered.com/en/wizard/HelpWithLoginInfo
Fill in your account name
 
 [Email an account recovery code to x]*
Type in the code you got sent to your e-mail
Fill in your proof of ownership on the said Help Desk -page (Picture link)[i.imgur.com]
 [Remove my phone number] (Picture link)[i.imgur.com]
Confirm removal (Picture link)[i.imgur.com]
* = If you don't have that option, and you're instead prompted to the Steam Support -article, then I'd imagine you either
Don't have a recent enough purchase. If you still have access to your account, you may still fix that by buying something cheap, i.e. from here.
You're under [Recently Changed E-mail Address], in which case you have to wait out until it's been more than 5 days since you changed it.

http://steamcommunity.com/sharedfiles/filedetails/?id=734264824
Steam Support -article