I would like to buy a tablet, probably a 7-inch one but I'm not too fussed about size. I want to use it for video and audio while out camping; navigation while riding a motorcycle and bicycle (hence the need for GPS facility), and Internet access via a dongle. I don't want one with in-built radio communications due to health concerns involving radiation. With a dongle, however, I could have it on the end of a cable safely away from my body. I can't do that when the cellphone or WiFi tech is contained within the tablet itself. I'm also not keen to spend a vast sum on a tablet. I am looking for recommendations. Please post any if able to assist. Thanks.