Q:How does a mobile come to know that which operator is meant for it. What exactly happens and how a mobile phone attach to the network.How it is different if the mobile is in roaming area?

A cell phone network is made up of the cell phones themselves, base stations, and the mobile switching center (MSC) hardware which does call routing, etc. The base stations (cell towers) are always broadcasting out control signals that contain a System ID (SID) and how it expects cell phones to identify themselves. When you power up a cell phone, it hears this and registers with the nearest base station and your cell phone sends its Mobile ID Number. This Mobile ID Number is more than just your cell phone number, it also contains its own system ID (SID) number, and it also contains the ESN, Electronic Serial Number that identifies that specific phone. If the base station's SID and cell phone's SID match, then the phone is on its home network. If not, then you are roaming and connect to another provider's network, usually for additional charges. Your phone usually can hear multiple cell towers but connects to the one that has the best signal (signal to noise ratio). After your phone is registered, your cell phone number plus ESN are forwarded to the MSC, which sends this to a home location register or HLR. If it turns out you're not on your home provider's network, it goes to a VLR, Visiting Location Register. This way the cellular network always knows where you are, that is, which cell you're in (what cell tower) so calls can be router to/from your cell phone.

Q:Can thieves play a cell phone?

If the outdoor, especially in the open place, because people than the surrounding target high, it is particularly easy to mine, and play do not play mobile phone nothing to do.

Q:I'm currently with Verizon right now and I have a Blackberry. I have a really cute Samsung phone too that I used when I was with T-mobile. If my blackberry ever dies or something like that, can I use the samsung phone?

no bc verizon is not the same network as gsn phones

Q:can anyone help me unlock my sony ericsson j100i mobile phone?

you can go to any cellphones stores and ask because i know some stores don't do that and it cost around $20 to 50$ depend on the store price or ur phone.

Q:I bought this cool mobile phone and i want to set it up for gprs im using mtn and vodacom i calld mtn and they say i must set it manually by the technicians. any one who know how to set it manualy please help i want to browse the internet. im in south africa

To activate the Gprs on mobile phone just follow the steps below: Select a Frequency Band to Activate GPRS: Step1 Access the phone's settings from the phone's main menu. Note: In countries outside of the United States or North America, you typically need to use the 900 MHz/1800 MHz frequency to get a GPRS signal from one of the mobile providers in another country. Step 2 Click the Network option from the menu that appears. Step 3 Select Band to begin the band selection. Step 4 Click on the band option that you want to activate a GPRS connection, such as 850/1900, 900/1800 or automatic if you are uncertain of the GPRS band. Step5 Turn the device off and then back on if it does not automatically select the band and you have selected the automatic option. Create a Network Connection to Activate GPRS Step1 Access the main menu on the phone to get to the settings menu. Step 2 Click Network, and then Network Setup (which usually appears as an option but depends on your model of phone). Step 3 Select Manual or Automatic. Note: You want to set your phone's option to Automatic so you can establish a GPRS connection with your mobile provider. However, select Manual if you want to choose a different network. Step 4 Make sure that your phone connects and you can begin to make calls. Reset the Phone to Activate GPRS Step1 Pull the battery out of your phone while it is turned on. Note: It is necessary to reset your phone at times if there are network glitches or coverage issues. This will re-establish your connect with a mobile provider's network. Step 2 Wait approximately 30 seconds, then re-insert the battery. Step 3 Press and hold the red Power button on your phone to turn it on. Step 4 Make sure that your phone displays the GPRS icon in the status bar to verify you are reconnected with your network.

Q:I have a business online which i need to put my mobile number onto. The thing is can i have a different number on my mobile that i can put online, which is linked to the same phone.Sorry i know you must be thinking WHY but i have my reasons. Thanks

Only with a dual SIM device: Dual SIM phones Mobile phones with simultaneous dual SIM capability built in have the advantage that there are no possible legal issues, breach of contract, or voiding of warranty. They allow both SIMs to be active simultaneously and allow calls to be received on either number, unlike adapters that make one or other number active as required. Normal GSM phones contain a single transceiver; dual-SIM phones must have dual transceivers, and need to display signal strength for both networks. A phone with a single transceiver cannot be converted to simultaneous dual-SIM operation; at most it can be made switchable with the use of an adapter. Although battery life (talk time and standby time) of dual-SIM phones is reduced, typically by about a third, when both SIMs are active, to compensate this they often came with better capacity batteries compared to single-SIM phones. As of Autumn 2007 some little-known Chinese companies supply inexpensive dual-SIM mobiles, mainly in Asian countries. The latest model include I-phone look alike which is the smallest dual-SIM phone ever built. Philips has made models Xenium and 699 with this capability belonging to the restart to change active-line generation. Samsung also released the D880 DuoS in November 2007, a slider which can hold two SIM cards with simultaneous standby, and E Ten will have announced a dual SIM 3G phone for October 2008 from their Glofish range. The WIKI dual SIM phone with integrated TV is also increasingly popular in the African region.

Q:Why gas stations can not call the phone?

People in order to make the communication signal more clearly, the use of mobile phones is very high frequency, transmission power is relatively strong, despite the national standards, but also on the fuel, filling stations constitute a serious threat.

Q:i have the slider phone for virgin mobile and i want to un activate it. how do i do it. hellp me plz??//

You can either call Virgin Mobile and have them unactivate it or you can use up all the minutes on it and not buy any for a long time and eventually it will just unactivate itself. Thats what my old Virgin Mobile phone did.

Q:I have a blackberry pearl is there any way I can dowload the keylogger onto a mobile phone? If anyone has done this please tell me how I need a computer or cell phone expert

I know that Actymac Dutywatch and Protemac Keybag are good keyloggers for Mac, but I'm not sure they can be installed on mobile phone.