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Is there any way to check who is connecting to my hotspot? I am using a rooted Samsung Galaxy SII.

I use the SII's tethering feature in: Settings > Wireless and network > Tethering and portable hotspot > Portable Wi-Fi hotspot settings > Portable Wi-Fi hotspot to create my hotspot.

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It depends what app you are using for your hotspot. Are you paying for the hotspot? Or are you rooted using the free tether app? More information please. – Mr. Monkey Jan 20 '12 at 2:59
@Mr.Monkey: I've updated my question. See the 3rd paragraph. – geffchang Jan 20 '12 at 3:33
maybe post a screenshot of the menu inside your tethering app? – jlehenbauer May 23 '12 at 18:55
up vote 9 down vote accepted

As mentioned in a comment it really depends on what app you are using to provide tethering.

On the stock HTC tethering app there is a view called "Manage users" which lets you see a list of connected devices listed be resolved host name. Touching each device reveals its hardware address and currently assigned IP address.HTC tethering app - manage users

As far as I can recall it is the same for the stock Samsung G S2 (at least in this region - northern europe).

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There's nothing like this for Galaxy SII. I suppose I have to accept this as an answer, but I would appreciate it if somebody could recommend an app I could use for this purpose. – geffchang Jan 26 '12 at 7:48

If you've got access to a terminal on your phone (I guess that requires being rooted), then you can also run ip neigh show dev wlan0 to see what's in the ARP tables.

That should tell you the MAC addresses and IP addresses of everything connected.

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In some cases, it would be ap0 not wlan0, but the best is to simply type ip neigh. And yes, it does need root access. – Firelord Nov 27 '15 at 11:13

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