I6 product features:
HD two-way call, 2. Contact book, 3. Online video call, 4. With alipay pay, 5. Heart rate and blood pressure measurement, 6.
Suitable for project:
Suitable for nursing homes, welfare homes, elderly relief stations, and other relevant institutions for the elderly project customized development, state support, policy training, the elderly industry for systematic and comprehensive development care for the elderly, intelligent solution to the elderly health problems. Support ODM customization, static/dynamic startup animation, server data docking, and provide dealer account management.
The outgoing list emphasizes:
4G [foreign version] (you must first contact customer service to confirm which country, which frequency band and operating memory, so as not to use it, remember!) :
The foreign edition has The LINE WhatsApp Translation, version is divided into (Asian version The European version North American version Running memory is 512MB+5G of running memory, good performance is not card.
The main supported bands are:
GSM: 850/900/1800/1900 MHZ
3 g: WCDMA B1 / B2 / B5 / B8 
4 g: FDD - LTE B1 / B3, B5 / B7 / B8  
TDD LTE - B38 / B39 / B40 / B41

North and South America.