Evangel SIM Card GSM Fixed Wireless Desktop Telephone Phone with SMS Function 2017 Upgrated Fixed Wireless Desk Phone - Combined the advantage of resonable pricing deals of a mobile WCDMA SIM contract with the convenience of the classic desktop phone - the perfect upgrade to any office and household. Newest 3G Network Connection: Support 3G Network WCDMA WCDMA 850/1900MHz Frequencies. Please Confirm With SIM Card Seller If Your SIM Card Meets Above 2 Requirements. Rather than limited landline deals for a standard desk phone, this GSM telephone works the same as a unlocked mobile phone. The GSM Desk Phone Comes with a 1000mAh(3.7Wh) Li-ion Battery, support 72 hours standby. But beware, the signal could also be affected just like a mobile phone. No need extra land line cable, the antenna is built-in. Easy to install and easy to maintain. Powerful capacity of signals receiving and steady performance, supports widely used in multi place. Convenient plug and play design with large buttons make this phone easy to operate, perfect for elderly to keep in contact with their family as well as for families and businessmen to save on costs.