End-to-end encryption and privacy controls.
Message and call for free* around the world.
Group conversations made simple.
Say it with stickers, voice, GIFs and more.
Reach your customers from anywhere.
http://slidesaaz.farafile.ir/file/34324/4-فایل-جهت-آموزش-بهتر-درس-cmos-vlsi-(به-زبان-انگلیسی)