This review is for the newer model of Samsung S2 the SM-T813 model, which is the 2016 model. The older S2 was the 810 model that was released in 2015. I owned the original S2 and loaned it to a friend because his older tablet broke. And he loves it so much that I gifted it to him for his birthday. Then, I decided to purchase the newer 813 the 2016 model for myself. Since I am a TECHIE type, I tested it thoroughly. This review is based on my personal experience with this tablet. Hopefully, this review will help you in your decision to purchase (or not), this device.PROS:1) STORAGE: So I purchased this tablet from an Amazon seller and jt was described as like new still in the box. I was happily surprised when this tablet arrived with 64 GB internal storage, not the 32GB of Internal Storage that was advertised. However, I cannot promise that all of these will have 64GB. ...however after the OS and Factory Apps, it had 52gb left. After I installed lots of personal Apps, I have 50.71gb left. Plenty left if I want to install more apps or updates on apps.* Note that the advertised Internal Storage space and available storage space is different because the advertised internal storage space is BEFORE the OS was factory installed, Factory Apps installed and Touch Wiz overlay. These take up about 11GB of the space. And the tablet updated with 385GB after I turned it on the first time.It came with Nougat 7.0 preinstalled, then installed a large performance update. It is running very, very fast after the update and the battery life had improved some as well.2) Android OS and updates...My tablet arrived with Nougat 7.0 pre-installed. And it auto updated a minor/improvement update of 385GB. After the update, it ran very fast, seemed faster.Flagship Samsung tablets are supposed to get two OS Upgrades. I looked up on Google to see, some sites said yes Oreo for the 813 model, so did not know. I am hoping so because my old 810 model (2015), received 2 OS updates.3) WiFi---My WiFi Router connected immediately to this phone and it is a fast WiFi. The WiFi is super strong and I receive 5 bars around my home and it keeps the connection even in my backyard.4) Display---The display is very, very clear and colors vivid as it has very high sharpness. Reading on Internet or PDF Book, the text is crisp. The videos in YouTube are very clear as well.5) Speed and Performance---For my personal use, I find the speed and performance excellent for the things I do such as Facebook, Twitter, Internet, YouTube, Email, etc. I do not play games on this tablet yet I found all videos run very well.Performs well, no lagging and no freezing.6) WiFi calling---Yes, I can make phone calls on this WIFI ONLY device using my Google Voice account and Hangouts. Note that this model is NOT a cellular device, to make a phone call, WiFi must be on and a WiFi calling app such as Hangouts or other WiFi calling apps are needed.7) External Slot for SD Card---So I installed a SanDisk 128gb Micro SD card which was loaded with my music, pictures, home videos and files. I still have 75 gb left on my SD Card. According to Gsmarena, this device holds a SD card up to 256 GB.8) Camera---I actually took some inside and outside pictures and saved them to my SD Card. The pictures (indoors and outdoors) are very OK, not professional quality, yet I am happy with the pictures, they are excellent for sending in email or even Facebook. My videos also came out well so I am happy.9) Battery life and Device Coolness---Battery life I find GOOD, and I am a heavy user of apps. I watch lots of YouTube videos, Facebook, listen to my music etc. My battery starts off at 100 percent, then after one hour of heavy use it shows close to 87 percent. This is because I am a heavy user.***Device coolness/Battery coolness---I use an app Widget free from Playstore called Battery Solo. Normally, it When I press, the highest it showed me was a cool 88 degrees Fahrenheit. This is excellent and the battery a device stays cool, it never overheats.10) OTG (On the Go), which means with a USB/Micro adapter, you can insert a USB Flash drive, USB mouse, keyboard (one at a time). I use this to copy files from my Flash drive to my tablet or vice versa).Only one Con, but not serious...1) USB Port is MICRO not a type C. No problem as all my other devices are Micro USB except my 2017 Samsung Tab A 8.0 tablet.* Would I purchase this device over again? Yes, in a heartbeat because my Samsung Tab 2 813 model has 64GB storage and Nougat OS. It is a wonderful phone at a reasonable cost, so I recommend it. I rate this 5 stars.Since I am a Techie, if you have any questions about this device, please ask me in the comments section. And I will answer all questions about this device. Thanks you for reading my review, I hope that it has been helpful for you in making your decision about this tablet.