Wireless Connectivity A large number of tablets have Wi-Fi capability. Not all tablets support the 802.11b/g Wi-Fi specification, hence you may want to consider the other Wi-Fi version as 802.11b/g Wi-Fi may not be sufficient for streaming and large downloads. You may want to opt for a tablet, compatible with the 0802.11n specification, as it is broader. An ideal tablet is one that provides a complete Wi-Fi connectivity and supports both 2.4 GHz and 5 GHz radio bands.
Memory A Bigger memory is a win any day. A typical tablet has a built in memory of about 1 GB to 500 GB, so this can be quite useful if your budget does not cover an external memory but if your budget does and you require sufficiency, then you can consider an external memory capacity .Keep in mind that this can be in the tune of up to 32GB .