Those symbols indicate which cellular network standard your mobile data connection is currently using, which in turn determines your maximum connection speed.
H stands for HSPA, or High Speed Packet Access, with a maximum theoretical speed of 14 Mb/s, or 42 Mb/s with HSDPA (High Speed Downlink Packet Access).
H+ stands for HSPA+, or Evolved HSPA, with a ...
Internet sharing or "Tethering" is an option that is not available on all Windows Phone devices. it is a feature that can be build by one of the OEM's
HTC provides tethering on their devices and it can be found in the settings menu.
There are rumours on Nokia working on an update to provide it on their Windows Phone devices as well.
I'm not to sure about ...
I'm on Orange, which has an app that tells you how much of your talkplan minutes you have remaining. Until recently it also showed how much of your data allowance you have left, but that seems to have been removed. This hasn't gone down well and Orange cutomers are giving it one star ratings in the marketplace in protest.
Anyway, I found an app called ...
In "Settings" some devices have an option labelled "Internet Sharing" which can turn your phone into a mobile Wi-Fi hotspot. This feature isn't disabled on some devices, and on some networks, but if it is there on your device, that's the option to use.
The limit is 20 MB
When the download size is larger than 20 MB and you are connected on a 3g network you'll receive the "Attention required" message.
If you connect to wifi you can tap the attention required message and press retry.
source: Microsoft WP7 Download apps and games FAQ
The 2G/3G option is a failsafe. When in the setting the phone will always use 3G, unless it is not available and then it will fallback on 2G. 2G and 3G are two completely separate bands and not all areas have the 3G band. This will prevent a disconnection from data and save battery life.
That said, different devices have different radios and will give you ...
The cap has been set to 20 MB and forces wifi for every download larger than that. There is no way to override this behavior.
Most 3g or cellular dataconnections are also not very stable for large downloads so I think this is one of the reasons why Microsoft didn't allow you to do this. Failing a large download a couple of times and retrying it can cost you ...
Anybody from Czech republic can use application called FUP Monitor which is free and can be downloaded here.
Credit for the idea of such app goes to @paranoid.
This is chance for anyone from anywhere - if Call Credit app doesn't support your country or your carrier, try to search your local marketplace for similar app.
Disadvantage of this approach is ...
No this is not available on Windows Phone through any of the available API's. there are apps however that make it possible to do this as stated in other answers.
For The Netherlands specific operators there are a few apps that do this for you (they scrape the data from the operator website.
the apps are Called BelStatus and are for 1 provider only
I spoke with Verizon Wireless regarding tethering for the HTC Windows Phone 8x. They tell me that tethering comes free with the 4GB plan. I only have the 2GB plan, so I cannot confirm. It is certainly built into the phone, but disabled by Verizon Wireless.
For the Dell Venue Pro there are steps and drivers to enable USB tethering is this thread. Wifi tethering is not possible on the DVP.
Whilst the phone is in USB tethering mode it cannot sync with Zune until the untether process is carried out, all other phone functions are unaffected.
This does not require the phone to be unlocked or rooted, and the ...