Straight Talk uses GSM and CDMA . Straight talk uses all four major carriers in the USA to provide their Services. Verizon and Sprint use CDMA, while AT and T-Mobile use GSM.
Read moreWhat is the best preferred network type?
Although 4G is recommended, as stated above, it can use more of your data more quickly in a given time frame. Most apps and mobile services operate on both 4G and 3G without problems. You can also change the DNS settings on your Android.1 May 2017
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