> ## Content Index
> Fetch the complete content index at: https://www.foodconsumer.org/llms.txt
> Use this file to discover other available public pages before exploring further.

# Which cell phone is safer: GSM-based or CDMA-based?
- URL: https://www.foodconsumer.org/which_cell_phone_is_safer_gsm-based_or_cdma-based_0528160721/
- Published: 2016-05-28T08:20:00.000Z
- Updated: 2026-09-15T14:38:31.000Z
- Description: A study report suggests GSM phones, used on AT&T and T-Mobile networks, affect brain activity much more than the CDMA phones used by Verizon, Sprint and U.S. Cellular, raising the question of whether buyers should weigh network type when choosing a handset.
- Author: Food Consumer
- Tags: Environment, Health News, #vivvo-import

Some cell phones can only work with the CDMA-based networks used by Verizon, Sprint and U.S. Cellular. Other cell phones can only work with the GSM-based networks used by AT&T and T-Mobile. A [study report](https://estudijas.rtu.lv/file.php/70917/Workshop%5Fon%5Fthe%5Fidentification%5Fof%5Fmulti-disciplinary%5Finter-disciplinary%5Fand%5Ftrans-disciplinary%5Fcharacter%5Fof%5Fresearches./2.pdf?ref=foodconsumer.org) suggests that GSM cell phones have a much greater impact on the brain activity than CDMA cell phones. As a growing body of [evidence](https://www.foodconsumer.org/study%5Flinks%5Fcell%5Fphone%5Fradiation%5Fto%5Fbrain%5Fcancer%5F0627160826/) suggests that cell phone radiation can induce brain cancer, should the type of a cell phone be something a cell phone buyer need to consider when he purchases a cell phone?