Android devices undeniably hold a large market share in the cell phone industry; the Android devices have been able to compete successfully against cell devices that have been in the market for longer periods. The Android market likewise has cultivated a huge fan base amongst Android device users, and as of October 2011 it was estimated that 300,000 apps exist in the Android Market. Here is a list of some of the top Sim card related apps for Android devices.
SIM Contacts Manager

The SIM contacts manager was developed to allow Android device users to manage their phone contacts much more easily. The app allows the user to check, export and import the contacts stored on their SIM card. Using the app the user can add, delete and modify their SIM contacts. The app is available for €1.70.
MultiSim
The MultiSim app helps dual SIM adapter user’s to track all their SIMs much more easily. The app generates a custom icon of the SIM card that is in current use on the device’s notification bar. The user can also switch between SIM cards using the app’s widget tool. The app supports analog adapters, HyperCard 3G and MagicSim 3G adapters. The app is available for free download from the Android market. For using these apps you can find some great offers on SIM only contracts website.
MobiLooker
The MobiLooker is an app that helps users to track Android devices, when the device’s SIM card is removed. The user simply sends an email or text message with the last known GPS co-ordinates of the device (if available) to another number. The app is popular with parents who want to keep track of their children’s where-about. The app is available from the Android market for $0.99.
XtraSEC

XtraSEC is a mobile security app that helps users to keep track of their Android devices. The app utilizes the device user’s existing Google account. The user can access their Android device remotely by turning on the SMS functionality via a WiFi connection. The app also helps the user to detect when their SIM card is replaced. The app also comes with a phone alert, which enables the device to send out an audio signal to the user when security is breached. Using the app the user can also remotely track their device’s battery info, telephony info, create a PIN phone lock and wipe their phone data remotely. The free version of the app allows the user to only manage and locate their device using SMS, while the paid version allows the user to access the full functions of the app.
Guardian
Guardian is a security app, which sends a message to a preferred number in the instance of a SIM change. The app registers the user’s SIM serial number and uses the information to alert the user in the event of a SIM change. The app also keeps record of the SIM card used to replace the user’s SIM, and with this information and the help of the police department the user can locate their stolen Android device. The app is available for free from the Android market.
Backup2Sim
Backup2Sim is an app that helps users to clean their SIM cards and back up their contacts from their Google accounts or CVS files to their SIM cards. The app helps users to make sure that they can always access their contacts in the event that they the contacts stored on their phones or want to pass their contacts to another phone. The app is available for $0.99.
Real Roaming Alarm
The Real Roaming Alarm app is designed for Android device users who live in cross-border regions or those using MVNO SIM cards. The app alerts the user when their SIM connects to foreign networks, saving them from incurring roaming costs. The app is free from the Android market.
As a writer interested in sharing useful applications, Costea also writes for a SIM Only contracts website that compares deals.