It is written in the product description:
"Scope of delivery
Quick guide, charger, charging cable".
So yes, it comes with a charging cable and charger and no, you don't have to buy them separately :-)
i don't know 100% - as it was given to my son. it is in constant use, always charged overnight plugged in and unplugged in the morning. Zero problem with the Tab A7
Wenn beide im selben Wlan sind, direkt über das Gerät.
https://www.computerbild.de/artikel/cb-Tipps-Tablets-Samsung-Tablet-mit-Fernseher-verbinden-31515977.html
Alternativ mit Kabel:
Samsung DeX Cable (USB Typ C, HDMI (Typ A))
The problem with the tablet is the built-in Mediatek CPU, which is lousy and incredibly slow. Unfortunately, there is not much that can be done. Even the second cheapest Realme Pad Mini would only be about 50% faster. At a price of 200, I'm afraid there's not much that can be done in this price range. :(.
You could try to delete everything but really everything that could be deleted and only work with the browser itself and the bare essentials, but I don't know if that would help.
You cannot open these McroSD slots with paper clips, a SIM tray tool must be used for this. These SIM tray tools are much thinner than a paper clip. They are also available for every modern smartphone, for example. If no such SIM tray tool is available, bending open a Bostich clip should also work, they are thinner than a paper clip.
I bought the A7 Lite 2 months ago, actually only because it was so cheap and a strong battery was advertised. It's always the same with batteries: In the first year, the advertising is still half right, but from the second year onwards, the performance decreases and the phone is always stuck in the charging station.
However, I am still very satisfied with it and would buy it again. It's lying around here in the office and I only need it in between, because I have several other devices. So the battery lasts a good week, but I've never measured the time. It's a super thing on the cheap, less than half the price of an iPad mini, slim and stylish, but not a gamer tab.
The tablet comes without a sim card. WhatsApp can also be installed on the Tab A7, according to research on the Internet.
https://www.zurucksetzen.de/de/installieren-whatsapp/samsung-galaxy-tab-a7-lite
Not sure which one you mean, but if it's the white one, it's the colour. Digitec sometimes sells the same model in different colours at different prices. The colours are likely to be popular in different ways.
I just tried this quickly with my Samsung Galaxy Tab A7 Lite / SW: Android 11.
2x Bluetooth speakers cannot be controlled simultaneously. I can be connected to 2 or more participants and switch back and forth relatively quickly, but running them in parallel is not possible.