Galaxy tab email slow charge/no sim card access

[Amicyco2]

I have a Samsung Galaxy Tab E & it won't charget after 24 hrs. I tried a different wall plug, wall chager block but I don't have another cable to try. I have 1 for an LG phone & it works on my galaxy S5 but scared to plug into my tabs port. Also I can't see how to open it to check/change battery or put in a similar card for data from att. Any reasons why this is? Getting really pissed it's only 7 most old but no warranty.

 

[webworkings]

If you just bought it less than a year ago, unless you have done something to void the warranty, it should still be covered.