One of the questions I get asked by mobile users who are new to 4G is whether it is possible to use a 4G SIM in a 3G phone. Yes; it is possible, but it depends on a number of factors.
if it is a regular 4G SIM card, it is possible, but you will not get a 4G connection. If your network operator offers 3G and 2G networks, the SIM will lock on to either of those for calls and data. To be able to use a 4G internet connection, you need to put your 4G SIM card in a compatible 4G smartphone. To understand 4G compatibility
On the other hand, if it is a 4G-only SIM card, i.e., a SIM card that does not support 2G and 3G, but only 4G LTE, the SIM will be unusable in a 3G phone. It will not be able to make a connection to the 3G network, which is all that the phone can connect to. A 4G-only SIM card requires a 4G phone and a 4G LTE network to connect to.
If you have any questions about 4G that have not been answered in any of the above articles, do ask using the comment form below. I will respond with an answer. Don’t forget to share this article with your circle of friends and network.
You will be interested in finding out if you can convert or upgrade a 3G phone to 4G.
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Founder of MobilityArena. Yomi’s journey in mobile started in 2001. Besides obsessing over mobile phones, he also started creating WAP sites (early mobile-friendly websites created with WML). He began writing about phones in 2004 and has been at it since then. He has owned over 200 devices, from Symbian, Palm, PocketPC/Windows Mobile, BlackBerry/BB10, webOS, Windows Phone, Firefox, Ubuntu Touch, to Android, iOS, and KaiOS operating systems.