I am trying to manually set up my new iPhone 12.

Edith3334 Said:

"I am trying to manually set up my new iPhone 12.: I am trying to manually set up my new iPhone 12. When I am prompted to enter my TMobile pin there is no enter button on the onscreen keyboard. As a result, I cannot move past this step of the setup process. Any help would be appreciated."

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Troubleshooting iPhone Activation:

A. Getting Around this Error:

1. Go Here: If you can't Activate your iPhone - Apple Support
2. As it Reads: "If your iPhone can't be activated or an alert says the activation server is unavailable or the SIM card is unsupported, learn what to do."

B. "No SIM":

"No SIM"*** is shown on the top-left corner of your screen. So, go here to fix that: If you See 'invalid SIM' or 'no SIM' on your iPhone or iPad - Apple Support

C. Whom to Contact:

Contact your Carrier, as their are the one who provide you with the service of configuring the SIM card:

Edith3334 Said:

"I am trying to manually set up my new iPhone 12.: I am not getting any error messages. After I enter my phone number, I am prompted to enter my Tmobile pin number. An onscreen keypad appears and there is no enter button. I type in my pin, but nothing happens and I can only leave the screen by restarting my iPhone. This does not appear to be a T-Mobile problem."

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Provide a Photo:

Please take a photo, and attach it as a reply. That would most certainly help.