How do I know which SIM size is right for my phone?
All SIM cards come triple punched with these sizes available: Standard SIM, Micro SIM and Nano SIM.
Depending on which phone you use you will need to choose between either of these 3 sizes. If you are unsure, remove your old SIM card and compare it to the SIM card provided to determine the right size. This will make it easier to recognise and ensure you pop out the right SIM size for your phone.
Generally, popular phones for these are:
Micro SIM: iPhone 4, 4S, Samsung Galaxy S3, S5
Nano SIM: iPhone 6, 6S, 6+, 7 and above. Samsung Galaxy S6, S7, S8, S8+
Whilst we are not affiliated with this site, https://www.gsmarena.com/, they are currently the best source to provide information on your mobile phone device.