iPhone12 on a 4G SIM Card

I have the iPhone 12 pro and use straighttalk. I never had any issues with service, all functionality you mentioned was there. Also, I disabled 5g auto and set it to LTE because I don’t have 5g access but even when it was enabled the service worked. I live in southern Michigan

iPhone 12 will work on the 4G LTE Network without issues.

Axel F.

Hi , just purchased an iPhone 12 pro to replace my 6s from o2. It came with a 5g SIM card I cannot receive or make calls! First they said my sim needed activated which they did and it made no difference after a second phone call they said I need a 4g SIM card because I live in an area that does not receive 5g yet! I wrongly assumed that a 5g SIM card would work with 2,3,4 or 5g but apparently not. I just wish they’d told me this first time round.

regards SMUDGER.

Same here! I just got the iPhone 12 and I have been back and forth on calls with Apple and straight talk because I cannot access FaceTime and I messages. The iPhone rep just told me it looks like I don’t have 5G on the straight talk network so I may have to switch carriers. Still working Through the problem.

I should mention I went to Walmart and purchased a SIM card BYOP kit and picked the Verizon version from the options inside to put in my phone not the at&t or the T-Mobile sims. The sim set I believe only talked about straight talk LTE I don’t remember it saying anything about 5g I could be wrong. But it might be a SIM card issue.

my iPhone 12 sounds pretty bad when I make/receive calls also. Lots of crackling. I was hoping this phone could access the 4g network? I’m trying to investigate but if anyone can help that would be great:)) thanks!

i was just getting ready to order a 12 pro to replace my old straight talk 6s when i read your issues, did you ever get it figured out? perhaps i should hold off on getting it..

Did you ever get this fixed? I ordered one and I’m nervous it’s not going to work now! I’ve looked up a 5g sim for straight talk and it’s nowhere to be found.

I ordered the Verizon compatible SIM card from Straight Talk and tried to activate my iPhone 12 Pro today. It wouldn’t work. I called Straight Talk and the first person transferred me because my phone is unlocked. The second person said I needed a 5G SIM card. I then went on their website in search of a 5G card. Couldn’t fine one so connected to the chat line. The rep there sent me a link to what she said would work on my phone. The link went to a 4G card that look like the same card I already have. She told me “if it doesn’t work call us back”. I may have to switch carriers. Any suggestions?

Can you use a 4g Ltd tracphone sim kit in an iPhone 12?