If your Cell Phone ask your for Sim Network Unlock Pin then the best option for you is to use this Free Code Generator Software tool. One of the most difficult issues related to smartphones is perhaps the network lock. Sim card processing tool restore mobile phone SMS, contact name and numbers. Data reader and writer software works with every sim card. Card reader is used for reading information that has been stored in sim, for restoring the deleted text messages.

Unless you purchased a Samsung cellphone that was specifically described as unlocked, your phone is probably locked, which means it is tied to a specific carrier's cellular service. To use that phone with another carrier, you need to unlock it. You can ask your current service provider to unlock the phone for you. Assuming you don't have a contract or have paid an early termination fee and have paid for the phone itself, your carrier may unlock it in-store or unlock it remotely. If your carrier won't unlock the phone for some reason, you can try to unlock it yourself using one of the free unlocking services available on the internet.

Free Samsung Unlocking Software and Codes

Listed here are software programs and unlock code services designed to help you unlock your Samsung phone.

Although this information is written specifically about Samsung phones, you may find that it applies to other Android phones also, including Google, Huawei, Xiaomi, LG, etc.

You'll need to know your Samsung phone's model number for most of these unlocking tools. It is usually located behind the battery, so you'll need to remove the battery to see it.

• WorldUnlock Codes Calculator — This small Windows software program generates unlock codes for many of the cell phones from major manufacturers including Samsung. After you download it and input your phone's details, including the model, manufacturer, location, and IMEI number, the unlock code calculator generates a code. The code must be entered while your phone does not have its SIM card installed.
• UnlockSamsungOnline — There are highly detailed instructions on this site that explain how to unlock your Samsung phone using a program called SRS.
• Free SIM Unlock Samsung Online — is an online service that generates a code you use to unlock your Samsung phone.
• Universal Simlock Remover — This third-party software is designed to unlock a variety of mobile phones including Samsung phones.
• FreeUnlocks — You can either pay for the unlock from this website or get it free through TrialPay.

Be Cautious When You Unlock

Unlocking your phone yourself can be a risky business because doing so may void any warranty you have, and the process can irreparably harm your phone. However, in most countries, including the U.S., it's completely legal.

Plenty of people are interested in unlocking their cellphones. If it works, unlocking your phone gives you more freedom in how and where you use it. You may be able to make cheaper calls, install new software, and do more with your phone. After you unlock your phone, though, it may not work with all carriers. Technologies differ among cell service providers, and your phone's technology must be compatible with the provider you plan to use.

Even when the phone works with a different carrier, some of the features may not work as they did previously.

Carrier Compatibility

The two network standards in the U.S. are Global System for Mobile Communications (GSM) and Code Division Multiple Access (CDMA). There are a few GSM/CMDA hybrid phones available, and it looks like most carriers will switch over to GSM. GSM phones have SIM card slots, and Long Term Evolution (LTE) is a GSM standard. Any phone or tablet with LTE must have a SIM card slot.

The moral of this story is that compatibility matters. Contact any cellular provider you are considering before you unlock your phone to make sure that your phone will be compatible with the company's service after you unlock it.

Alternatives to Free Unlocking Codes for Your Smartphone

Buying an unlocked phone is a safer, but more expensive alternative to unlocking a phone yourself.

You can also purchase unlocking software that might work when the free software doesn't, but make sure you research it thoroughly so that you don't throw away your money. Here are a few services to check out:

• UnlockBase — claims to have unlock codes for more than 3,000 Samsung smartphone models. They aren't free, but you can't beat the selection.
• Dr.fone toolkit — a paid service that offers a free trial you may find useful.
• CellUnlocker.net — covers a wide range of Samsung model unlock codes.

You can also try the web-based unlock tool at SamMobile.com as a substitute for a software-based solution. Give the site a few details about your handset, and it emails you the appropriate unlock code. Even though it's not free, it has a high success rate at unlocking Samsung smartphones.

Part 2: dr.fone - Android Sim Unlock

This is another useful piece of software from the Wondershare product line to unlock your Android SIM.

Mobile Sim Unlock software, free download

dr.fone - Android SIM Unlock

The fastest way to unlock your phone.

• Simple process, permanent results.
• Supports over 400 devices.
• Operates in over 60 countries.
• No risk to your phone or data.

Follow the simple process to initiate the process.

Initiate the Dr. Fone Android phone unlocking software on the desktop or other computer, then choose 'Android SIM Unlock' that appears under the 'More Tools' tab.

For Samsung phones including S2, S4, Note1 and Note 3

Step 1

Your Android Device Is Connected

• Connect both the android phone and the computer via a USB cable. Ensure USB debugging mode is enabled. The Dr. Fone software automatically recognises your device.

• Select Next for the next move.

Step 2

USB Setting/Diagnostic/Service Mode

• Instructions flash over the program interface. Follow them to enable the USB Setting/Diagnostic/Service Mode on your Android device.
• You can now dial #9090#, ##3424#, or *#0808# on the Android phone. As soon as you finish entering any of these codes, the phone shifts into USB Setting/Diagnostic/Service mode.

• Choose CDMA MODEM or UART[*] or DM + MODEM + ADB on your phone to set it, then click Unlock.

Step 3

Once you begin the process with unlock, Dr. Fone initiates the SIM unlock process. It may take a few seconds to complete.

Notes:

1. After the phone is unlocked, set it back to normal mode. This is done by clicking on the Restore Mode.

2. To bring your phone back to normal mode, dial ##3424#, or #0808#, or #9090# on the android device, then choose PDA, or USB[*], or MTP + ADB within the hidden menu.

Once you click Next, your phone is now in normal mode and successfully SIM unlocked

For Samsung S3 ~ S7 devices, the process is much simpler. Ensure your devices are rooted before proceeding.

Step 1

Your Samsung Phone Is Connected

• In a rooted device, your Samsung phone is connected to the computer via a USB cable. The device is automatically recognised by Dr. Fone.

• Proceed by clicking on Unlock.

Step 2

• Once Unlock is clicked, the Android phone unlocking software begins to SIM unlock the device. It takes a few minutes before the process is completed.

Free Sim Unlock software download, free

Note: the Samsung device restarts once during the SIM unlock process. Ensure your phone remains connected until the process is complete.