One common complaint that we see here in the community is that of missing data and there are a LOT of ways that data can go "POOF".
Besides a computer connected directly to the modem many users use a router to allow multiple connections with other devices.
One often overlooked "consumer" of data is the router itself. Recently I upgraded my router to a Asus RT-AC3100:
All routers come out of the box with a number of default values set in a confusing number of setting options. In many cases the router manufacturer assumes a true broadband connection and bases its settings more on convenience than the realities of a data capped service where every byte counts.
There were three areas available:
I enabled Network Protection and DNS filtering.
Within a short period those two services used about 1/2 GB in a short period of time.
I thought that was a lot of data for someone on a capped service so I trimmed it down to DNS filtering only. How much could that use? It sounds innocent enough right ?
The router can list usage per "client" including itself (192.168.1.0 in this case):
The DNS filtering function used 476.28 MB in only three days.
There are so many places that data can be consumed that are not readily apparent........ and we have yet to look at the connected devices themselves.
"Does that have the same issues"
Its not so much of an "issue" as it is an option. If on a limitless service ... not an issue. If on a data capped service users have to have a better understanding of all of the devices that comprise their Networks.
Everything has to be carefully reviewed so as to plug undesired sources of data use.
You should be able to review your routers settings by entering this address into your browser:
Hopefully your installer changed the default username and password and supplied that information to you.
I would not recommend that you make changes to any settings without obtaining advice.
"Has anyone ever tried to use their phone this way? And did it work?"
I can't say from personal experience because I live in cellular dead zone. I have to go outside stand on one foot with a moistened forefinger pointed skyward and maybe I can get a broken signal.
Much is going to depend on your cellular data plan and if it allows being used as a hotspot to begin with. Then there are the costs to consider.
With a capped service like Hughes a user wants to be very stingy with what devices are allowed to access the Hughes connection and Cell phones and Directv/Dish receivers are at the top of that list.
Cell Phones just LOVE to do their heavy duty updates when they smell a wifi connection.
It is essential that a user review all the routers settings and delete all Guest Accounts and enable encryption on all wireless frequencies to prevent "drive-by" connections by unintended devices.
We had one user recently that discovered that her husbands laptop (after being booted from the list of authorized users) did an end-around and connected thru the wireless network printer that was also acting as a wireless access point.