Bring your iphone’s anywhere-internet to your laptop with iphone Modem or pdanet.

For some time, cell phone users have been able to tether their phones to their laptops and use them as Bluetooth modems, utilizing their data plan to power their laptop’s browsing. For a time, this ability was not available on iphones. people were unable to use their mighty eDGe or 3G for nonphone browsing. Jailbroken apps changed this.

There are a few tethering apps to be found on cydia. The two covered here will be iphone Modem (www.iphonemodem.com) and pdanet (www.junefabrics.com). For either one, download them from cydia.

iphone Modem also has a desktop app for you to use that streamlines the process of tethering and that works on either Mac or Windows. To connect your Mac to the pdanet, you’ll need to make an ad hoc network.

If you chose the iPhone Modem route, just launch the desktop app and press Connect. d It will do the following step for you.

To do this on a Mac, go to the drop-down menu of your airport status icon and click create network. name the network whatever you wish, and include a password if you so choose. on a pc, go to the network and sharing control panel, and select “set up a connection or network.” specify that it should be a wireless ad hoc network, and click through to create it. again, name it whatever you want, and choose a level of security. check “save” if you want to use this network sometime in the future for the same purpose.

Now connect your iphone to the network you just made, and start up your app. on iphone Modem, press connect. on pdanet, turn on the Wi-Fi Router.

When your app shows a happy connection screen, you should be connected. Most apps should work ine over your tethered connection. eDGe is ine for browsing and anything that the iphone feels safe doing over eDGe. 3G is even strong enough to handle skype. it can even, for those so inclined, handle World of Warcraft.

Keep your apps going with Backgrounder.

only a handful of apple’s standard apps will keep updating when they aren’t open things like sMs, Mail, and the alarms. This means that apps like aiM and Yahoo!Messenger will function and receive iMs only when the phone is unlocked (screen on) and the app is running (on screen). This almost defeats the purpose of their convenient messaging.

With Backgrounder running, you can leave these applications running in the background while you do other things, or while your phone is in your pocket. You can use it to more quickly boot up an application that you use frequently, or keep it running for background updates (like the instant messenger apps).

Download Backgrounder from cydia. it won’t have an icon on the springBoard it will simply be hooked onto your device’s apps. When you want something to keep running in the background, open it up and then hold the home button for a second or two. a window will show up, and your app will stay open after you return to the home screen. iMs will still beep, thus you’ll know when someone sent you an instant message...instantly.

Some apps of note: if you use this on ocarina, it will continue to respond to microphone stimuli, and resound its standard note. Lightsaber Unleashed will continue to hum in the background, but it will not respond to motion, unfortunately.

Keep Your Wi-Fi running all the time on Your iphone

You can keep your iphone connected to Wi-Fi when it goes to sleep with this hack.

The iphone has remarkable networking capabilities, in that it rather seamlessly switches between eDGe, 3G, and Wi-Fi connections. But sometimes what the iphone wants to do is not what you want it to do. often if you’re at home or at work, and you need to access iles on your iphone, you’d like it just to stay online instead of sleeping and locking itself. normally, 30 seconds after the screen shuts off, the iphone sleeps.

The fix is easy. insomnia, an application that has existed for years for Mac notebooks and is now available for the iphone, keeps things running when the phone sleeps, including Wi-Fi networking. You can ind insomnia in cydia.

Note that leaving Wi-Fi on all the time will reduce battery life. however, if you’re usually on Wi-Fi and you have an iphone 3G, you can disable your 3G network to get some of that idle energy back. programming

You can download the source code for iphone insomnia and learn how to incorporate the insomnia code into your own application at http://code.google.com/p/iphone-insomnia.

Using Voipover3G, you can download apps and make Voip calls without Wi-Fi

Although the 3G network has completely acceptable speeds even for demanding network services such as the app store, iTunes store, and Voip these apps stop working when not used over Wi-Fi. But if you need an app, song, or need to make a Voip call and there’s no open Wi-Fi to be found, what do you do? You trick the apps into thinking that you do have Wi-Fi, so that they’ll happily chug along.

There’s one simple step to do this: download Voipover3G from cydia. You may now use the app store, iTunes store, Fring, and Truphone all over 3G.

If those are not all the apps that you wish to trick into thinking you’re connected to Wi-Fi, you will need to do something a bit more in depth. Find the ile /Library/MobileSubstrate/ DynamicLibraries/VoIPover3G.plist on your iphone. This plist ile contains the list of apps that Voipover3G will attempt to pull a fast one on.

You’ll need to add the bundle identiier that is contained in the Info.plist ile (e.g., com.apple.mobilestore) to this plist just like the other ones that sit there. or, for a really bad idea, you can delete the entire VoIPover3G.plist ile, and all apps will be bamboozled into thinking that they have Wi-Fi under any circumstances. some apps do not like being tricked like this and will react poorly, because of the slower network performance.

Now go out there and make some Voip calls!