I have a in great condition Galaxy Tab. Originally with Android Froyo 2.2, WifI I have actually given that updated/upgraded it to the most recent Android Kit Kat 4.4. Its likewise rooted ... It has a sim card slot that works off and on since I customized it However WiFi works 100 %.
Although it was made for just WiFi and 3G information, its modified to be used as a phone as well.