• T-Mobile - Has TCP/IP
  Go to Options->TCP (or Tools->TCP)
  APN: wap.voicestream.com
  Username: (blank)
  Password: (blank)
  Note: T-Mobile has fixed the port-blocking issue - see this post for more info. In rare cases, it is reported you may need to enter your T-Mobile username and password, the same information used for logging into www.t-mobile.com/bwc ... If it still does not work properly, just call T-Mobile (call after Feburary 11th, 2005), and ask them to get the "wap.voicestream.com Internet Access Point Name" added to your BlackBerry account at no extra charge.
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• Cingular Orange - Has TCP/IP
  Go to Options->TCP
  APN: wap.cingular
  Username: WAP@CINGULARGPS.COM
  Password: CINGULAR1
  Formerly, it used to be difficult to get this to work on Cingular but in December 2005, a new Internet Browser Icon suddenly appeared on Cingular BlackBerry units. When this happened, it also suddenly became easier to use Cingular BlackBerry with TCP/IP. If you are still having problems, please click here.
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• Cingular Blue - Has TCP/IP
  Go to Options->TCP
  APN: proxy
  Username: (blank)
  Password: (blank)
  Try using these settings if you are on the former AT&T network, instead of the Cingular settings.
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• Verizon - Has TCP/IP
  Newer models including 7250 and 7130 now has a TCP/IP stack, no configuration is needed. Many third party Internet applications work out of the box on it! However, the older 6750 and 7750 models will NOT work with TCP/IP.
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• Nextel/Telus - iDEN - Has TCP/IP
  No APN/TCP settings required on iDEN units including 65XX, 75XX and 7100i. They are special because they are iDEN and more native TCP/IP. After a new BlackBerry activation, you may need to wait 2 business days before third party Internet software such as VeriChat works. In the past, it was necessary to call Nextel to order the static IP address option (about $4/month), but now a static IP address appears to be included with BlackBerries by default.
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• Rogers - Has TCP/IP
  Go to Options->TCP
  APN: internet.com
  Username/password is blank
  Note: If this does not work, call Rogers and get the "internet.com Access Point Name" added to your account. If they say it already exists, tell them to load up the records anyway, just to doublecheck.
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• Telus - CDMA - Has Partial TCP/IP
  Recently, in late 2005, this feature got activated on newer Telus units. Newer models including 7250 now has a TCP/IP stack, no configuration is needed. However, there seems to be blocking for certain applications such as IM. Several third party Internet applications work out of the box on it! However, the older 6750 and 7750 models will NOT work with TCP/IP.
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• Bell Mobility - Does NOT Work; Need MDS hosting
  Unfortunately, none of the Bell Mobility BlackBerries have a TCP/IP stack enabled. Not even the 7250. A future BlackBerryOS may fix this, or Bell Mobility might enable the feature in the future. No timeline known. For now, get BES/MDS Hosting in order to make 3rd party Internet applications work. (Note: Some applications such as IM+ will work on Bell Moblity if configuring using WAP/gateway/APN settings listed below. See this post)
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• Sprint - Unknown; Might Work
  Unknown. There is enough TCP/IP functionality in BlackBerryOS 4.0.0.204 or later, for software such as Verichat and Berry411 to work. This BlackBerryOS is preinstalled on the model 7250. Some software such as Reqwireless Emailviewer will require you to input gateway IP address information (See below). For the best TCP/IP support, you must use BES/MDS. You will need to pay $10 to $25 extra per month for BES/MDS Hosting in order to gain access to the Internet and TCP/IP software.
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• Other Carriers - Might Work
  This is a list posted by a wonderful forum member bfrye on BlackBerryForums.com ... In addition to this list, there is also another list of alternate APN's on the Internet. You may have to telephone your carrier to tell them to get the Access Point Name (APN) added to your BlackBerry mobile phone account. Here are the most common APN's, although they can change over time: