The iPhone has a 3 deoxyguanosine monophosphate modem work up into it that lets the phone access high - focal ratio mobile information and voice web . So why ca n’t we use that same built - in modem with our laptop when we ’re traveling rather of having to grease one’s palms a separate 3 gravitational constant modem or cellular router for the electronic computer and pay a disjoined monthly service fee ?

The good intelligence is that you could , more or less , using tethering . tether let you turn a phone into a cellular modem , but with substantially more limits than alternative such as cellular routers or mobile hot spot . Tethering is one to one ( you connect a speech sound to a laptop ) , and the laptop must have the right gadget driver to make it put to work .

In dividing line , cellular router , which are standalone devices , and wandering hotspots , which are a feature on some electric cell phone , divvy up a cellular joining via Wi - Fi .

Article image

The myWireless app lets you change billable account features like tethering.

immune carrier outside the United States begin offer tethering with the 2009 exit of iPhone OS 3 ( now called iOS 3 ) . AT&T promised tethering , but didn’tdeliver until iOS 4 send in 2010 .

The system essential for iPhone tethering are Mac OS X 10.5.8 or later ( though 10.4.11 may work for Bluetooth ) . You ’ll also need iTunes 9.2 or later on , as well as a USB 2.0 port wine or support for Bluetooth 2.0 . ( In case you were wonder , you ca n’t tether an iPhone to an iPad or vice versa with a3 G iPad . It ’s a shame , because otherwise you could own a cheaper iPad — the Wi - Fi - only model — and use the iPhone as its data source instead of managing two disjoined 3 G plans to have participating armed service . )

observe : you may employ tethering with a desktop computer , but you ’re unlikely to travel with one . Tethering is meant as a wandering option for peregrine use of goods and services because it is more expensive than most other options . For a stationary calculator , look into fixed wireless service or WiMax if wire broadband is n’t an choice .

Article image

A banner lets you know whenever your phone is acting as a cellular modem for a computer, whether over USB or Bluetooth.

Pay for tethering

Outside the United States , some carriers charge to enable tether service , even though you ’re already paying the carrier for data uptake . In the United States , AT&T once had an argument for charging for tethering when it extend unlimited data design . But now that AT&T has discontinued those plans , there ’s no excuse for the fee it charges .

The myWireless app lets you change billable account feature article like tether .

AT&T charges its U.S. customers $ 20 per calendar month for each month in which tethering is active . Further , you must also have the higher toll DataPro plan at $ 25 per month , instead of DataPlus at $ 15 per calendar month . you’re able to throw between DataPlus and DataPro and enable or disable tethering a calendar month at a fourth dimension , however . Tethering eats up data point from the same pool as your regular phone - based mobile broadband use . The DataPro plan includes 2 GB of role each month ; additional bandwidth costs $ 10 per 1 Great Britain .

Article image

The Lock screen also shows whether tethering is active or not.

AT&T customers apply the caller ’s costless myWireless app to transfer a datum service design and toggle tethering on or off . It ’s far simple than using AT&T ’s Website .

If AT&T is not your toter , and your attack aircraft carrier offers tethering , watch over instructions in the preferences app . Tap General - > internet - > Set Up Internet Tethering .

Turn on tethering

After you ’ve added tether to your data carrier account , go to options - > General - > internet - > Internet Tethering . In the net Tethering battery-acid , tap the Internet Tethering flip to On .

With tethering on , you’re able to punch an iPhone into a laptop via USB or geminate the sound ’s tethering service with your computer over Bluetooth :

A banner lets you know whenever your phone is represent as a cellular modem for a computing gadget , whether over USB or Bluetooth .

Article image

An entry appears in the adapters list.

Once you make the connection , a spicy pulsing standard will appear across the top of the screen , as you’re able to see in the screenshot to the left .

The Lock CRT screen also shows whether tethering is active or not .

If the phone is on standby , a larger banner appear on the Lock cover when you awaken the sound ( as shown in the screenshot to the right ) .

Article image

Enter the Mac-generated PIN on your iPhone.

I explicate how to make the each type of connection next .

Tether with USB

With tethering enabled on the iPhone , connect your iPhone to your figurer using a USB cable system .

funnily , you must launch iTunes after connecting your iPhone for the first metre , even if you do n’t normally utilise this computer for synchronise . I ’ve found that you must launch iTunes only once after connect via USB ; on subsequent occasions , the system remembers that it can practice a tethered speech sound . ( If you do n’t have iTunes installed already , download it fromApple . It can take several minutes to instal , and the installer will prompt you a few times to approve various factor . )

Once you ’ve establish iTunes , follow the directions below .

Article image

The iPhone is now tethered to the Mac and active.

An debut appears in the adapter list . The first time you enable tether and punch an iPhone into a Mac via USB , Mac OS X alerts you that the interface is added and the Mac ’s web organisation taste pane adds an adapter entry .

Mac OS X mechanically trip a tethered link , and turns that red dot in the material body to the right green .

Not active ? check that you ’ve launched iTunes , a required step , even though iTunes does n’t seem to have anything to do with tethering .

To hold the dynamic tethering connection , you’re able to do any of the pursual :

Tether with Bluetooth

On your iPhone , make certain Bluetooth is wrench on — attend in the options app , in General - > Bluetooth . Once you ’re sure it ’s enabled , turn on tethering on your Mac .

enrol the Mac - generated PIN on your iPhone .

The iPhone is now tethered to the Mac and combat-ready .

On the Mac , you ’ll see the Status recording label specify to Connected . On your iPhone , the Internet tethering banner will appear .

To unplug Bluetooth tethering , you could do any of the following :

[ Glenn Fleishman is a frequent contributor to Macworld on networking topics , technical editor of TidBits , and generator of numerous books , including the just - publishedTake Control of iPhone and iPod touching Networking & Security , Io 4 Edition(TidBits Publishing , 2010 ) . ]

[ update 2:12 p.m. on 12/06 to clear up statement about outside tethering . ]

8GB iPhone 3GS

16GB iPhone 4 (GSM, AT&T)

32GB iPhone 4 (GSM, AT&T)