Search results
Results from the WOW.Com Content Network
It's been nearly three weeks since the iPhone 4 went on sale. But it wasn't until yesterday that Consumer Reports, the ultimate authority in which big-ticket items to buy and which to bypass ...
It's the ultimate of ironies that Apple's externalized antenna array in the iPhone 4 -- hoped (and hyped up) to finally give us a phone every bit as good the rest of the device -- has become the ...
It shouldn't be surprising that rival cell phone manufacturers weren't thrilled when Apple (AAPL) CEO Steve Jobs said the iPhone 4's antenna problems aren't specific to that device but rather are ...
Code-division multiple access (CDMA) is a channel access method used by various radio communication technologies. CDMA is an example of multiple access, where several transmitters can send information simultaneously over a single communication channel.
This is an accepted version of this page This is the latest accepted revision, reviewed on 4 February 2025. 2010 smartphone by Apple "iPhone 4G" redirects here. For the first iPhone with 4G networking, see iPhone 5. Not to be confused with iPhone 4s. iPhone 4 iPhone 4 (GSM model) in black Developer Apple Inc. Manufacturers Foxconn (UMTS/GSM model) Pegatron (CDMA model) Type Smartphone ...
In 3G, the most prevalent technology was UMTS with CDMA-2000 in close contention. All radio access technologies have to solve the same problems: to divide the finite RF spectrum among multiple users as efficiently as possible. GSM uses TDMA and FDMA for user and cell separation. UMTS, IS-95 and CDMA-2000 use CDMA. WiMAX and LTE use OFDM.
Despite a growing controversy over the reception troubles plaguing the iPhone 4, Apple (AAPL) does not plan to recall the device, The Wall Street Journal reported late Thursday, citing a person ...
The iPhone 4s has a stainless steel, dual cellular antenna design, identical to iPhone 4 CDMA. Apple redesigned the antenna in the iPhone 4 CDMA after some original iPhone 4 users reported cellular signal attenuation problems as a result of holding it in certain positions.