I bought an iphone SE online through apple. The thing is i do not plan to use this phone in the US and use it out of the country. However since its unlocked, i can use it anywhere i know with the right sim. The issue is when i bought the phone online, i clicked on no sim. I recall there were options to choose tmobile and other carriers etc but i did not think about this because i am using it out of the country. Well i am setting up my iphone SE and got the message no sim. Then it says you cannot activate it without a sim card. Does this mean 100 percent i need a sim card? If i had clicked on tmobile sim card when ordering it, its still same cost i believe right? The thing though is you always need a sim card to set up an iphone? I think i have a spare tmobile sim card with me but i have to look through my bags etc. So if i find the tmobile sim card, is it easy to put the sim card in? I don't see where you can open it yourself. Does this require me to go to a phone shop or repair shop? And how much do i have to pay for this? Assuming i don't have a sim card, how much for the tmobile sim card. Assuming i have the sim card, how much does it cost for them to pu the sim card in. The thing is i don't plan to use this iphone here but outside the us so i won't be purchasing any plan. I'm pretty frustrated now as I did not know you need a sim to activate the iphone. So what are my options here? When i leave the country, i will be putting another countrys sim card into this phone. So at the time when ordering it online, i just put no sim. --- Post Merged, Sep 29, 2016 --- I called apple and i was told i could use a sim card from another iphone. I have an iphone 4s. Can someone tell me what other iphone sim cards would work with this? Basically I need to set the iphone up here in the US and when i leave the country, the sim card I use will be from another country when i get that one. My sim card i have is another country based but that should be fine? Also i have not removed sim card before but is it pretty simple to remove the sim card from iphone 4s and put it into the iphone SE? And what other sim cards work with the SE? I feel foolish since i didn't know you need a sim card to activate the iphone so thats why i choosed no sim card as oppose to tmobile.