Simple Keypad - The TT190 has a large separated keypad for easier typing. With talking keys and distinct red and green keys for making and ending calls. Loud Speaker - Extra loud speaker for calls and speakerphone function for even louder volume Emergency Assistance Button / SOS Alarm – Feel the security of having an emergency button that will call and text friends and loved ones with the touch of one button. Large Font - The TT190 has a user friendly menu which is laid out in a really easy way with large fonts and has clear icons which makes it simple to use for anyone. The TTfone TT190 is unlocked, sim free and will work with all 2G networks including: Vodafone O2 EE Virgin Giff Gaff Tesco ASDA, Asda Mobile, BT Mobile, EE, giffgaff, O2, Plusnet Mobile, Sky Mobile, Tesco Mobile, Unlocked, Virgin Mobile, Vodafone, VOXI – NOTE this phone will not work on 3G only networks like Three, Smarty and ID Mobile