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[* black] The SIM slot is gone. According to Apple, the SIM card and SIM tray waswere the only user-servicable partparts in the iPhone 4. Apple now says "iPhone does not contain any user-servicable parts." We believe you have the [link|http://www.ifixit.com/Manifesto|right to repair your own hardware], and we'll have a repair guide available right away.
[* black] The SIM slot is gone. According to Apple, the SIM card and SIM tray waswere the only user-servicable partparts in the iPhone 4. Apple now says "iPhone does not contain any user-servicable parts." We believe you have the [link|http://www.ifixit.com/Manifesto|right to repair your own hardware], and we'll have a repair guide available right away.
[* icon_note] Here's a brief overview of the iPhone's cell phone frequencies, in case you forgot.
[* black] The GSM iPhone has antennas capable of communicating on UMTS/HSDPA/HSUPA (850, 900, 1900, 2100 MHz) and GSM/EDGE (850, 900, 1800, 1900 MHz).
[* black] CDMA carriers don't operate on as many frequency bands. The Verizon iPhone can talk on 800 and 1900 MHz for CDMA EV-DO Rev. A.
[* black] Both phones also have antennas for personal networking—2400 MHz for Bluetooth plus 2.4 and 5 GHz for WiFi.