AdvantagesThousands of free apps
DisadvantagesGmail account is compulsory for sign up
AdvantagesSuitable for those with all but the smallest fingers
DisadvantagesDon't expect them to last too long - but they are cheap
AdvantagesWith Tablets - you must know all the little details before purchase.
DisadvantagesMany unknown brands are very unreliable. Better to pay extra for a good one.