Although all major mobile operators worldwide, including the four major airlines in the United States, use the same 4G technology to provide high-speed Internet access to smartphones, they do not use all the same radio frequencies. And Depending If you own specific frequency licenses and how to build your networks, do not use the same frequency bands throughout your network. So if you want to bring your CDMA device to another CDMA operator, a CDMA device may not be used on a GSM network, and vice versa, you must have the operator distribute the device to the other network. When it comes to LTE, it not enough just to watch the frequency, as some carriers use different splitters for the same frequency for their LTE networks. To make sure the phone you purchase will work with Sprint network, it important to look at device specifications to ensure it supports frequencies that are compatible with the cable, especially if you are looking for a replacement looking for cheap phone like In many cases, it is set by manufacturers and service providers. Developer Unlock Windows Phone 10 more. Such an agreement would mean that a consumer would be able to switch to an operator with a better plan and it could trigger a price war over service plans, said Chand. It uses Sprint 3G mobile network based on CDMA, which is technical. Sell Unlocked Iphone 6s. For this reason, a Sprint phone should not work on the Virgin network. However, there are many cheap smartphones on the market, such as new Motorola devices and a number of Chinese manufacturers that give you great savings. And if you have a device that is locked, you can unlock it by your wireless service provider if you meet certain criteria including paying the full price of your device or terminating your contract and having a proper connection to your service provider. If you want to use it in Abroad, you should ask if your phone is a tri-band or quad-band device to prevent disconnection.