According to your description, GSM mobile phones use 2G networks, CDMA mobile phones use 1X and 3G networks, and CDMA mobile phones have fast Internet access and are green and healthy. The transmission power of CDMA mobile phone is equivalent to that of fixed telephone, even lower than that of ordinary TV remote controller. The maximum power is only 200mW, which can be controlled at several milliwatts during ordinary calls. Now we offer telecom Huawei A 199, GSM/CDMA2000 dual card, dual standby and dual communication.
If you want to buy this mobile phone, please log on to the online business hall of China (Anhui) Telecom. I hope my answer can help you and get your adoption. Thank you for your concern and support for telecom products. Wish you a happy life!