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Some years ago, Apple started offering unlocked iPhones for sale in its own stores. But due to the presence of an additional level of security, iPhone owners cannot use mobile apps that are not on the App Store. Solving this problem, some users only regard an iPhone as fully unlocked when it no longer has this restriction, and the process of getting rid of this restriction is called “ jailbreaking “.

An RSIM is a chip used to unlock a locked iPhone
But jailbreaking an iPhone is not the same as unlocking it. Unlocking an iPhone allows it to be used with a different carrier, while jailbreaking it involves modifying the operating system to allow for the installation of unauthorized or unsupported software. Jailbreaking may void the phone’s warranty and could potentially compromise the security of the device.
If you’re looking to buy a new or used iPhone, you would want to know what a chip-unlocked iPhone is and the differences between purchasing a locked iPhone, a network-unlocked iPhone, or factory-unlocked iPhone. Today’s post takes a look at these issues and also sheds light on the disadvantages of buying a chip-unlocked iPhone.
- Understanding a Chip-Unlocked iPhone
- What Are the Differences between Unlocked & Locked iPhones?
- Why Are iPhones Typically Sold Locked?
- Will an Unlocked iPhone Contain a SIM Card?
- Is It Possible to Use the iPhone with More Than One Carrier at Once?
- Will an Unlocked iPhone Work with Any Phone Company?
- Is It Okay to Buy an Unlocked Phone with the Dual SIM Models?
- Unlocking an Existing iPhone – Is That Even Possible?
- What Are the Disadvantages of Chip-Unlocked iPhone?
- Any Advantages of Chip-Unlocked iPhone?
- In a Nutshell
Understanding a Chip-Unlocked iPhone
A locked iPhone can be unlocked with the use of a chip known as RSIM, which could be GEVEY, TPSIM, and other similar products depending on the chipmaker. The resulting device becomes a chip-unlocked iPhone. The unlocking procedure goes as follows: Put your SIM (Vodafone, Airtel, GLO, or any other networks) on the chip, and insert the two together into your phone. You will now see your network.
When you have carried out this process, your device will work like a factory-unlocked iPhone, so long your SIM card is on the RSIM. Like the majority of cellphones sold on the US markets, an iPhone is usually locked to one mobile network. As of now, you can purchase it via carriers like Verizon Wireless and AT&T.
One of the common reasons cellphone users will opt for an unlocked phone is that they will be able to use it on other network carriers. An unlocked iOS-powered device is usable on all GSM networks, including T-Mobile, AT&T, along with several foreign cellphone networks.
Also, by unlocking your iPhone, when on a trip to a foreign country, you will be able to buy a SIM card for your destination country and connect your mobile device to a GSM network in the country. This will help cut down on roaming fees and also gives you a local number in that country that you will find really useful if you are a business traveller.
What Are the Differences between Unlocked & Locked iPhones?
Before Apple began selling factory-unlocked iPhones (meaning that you bought the phone from the manufacturer directly in an unlocked state), every iPhone sold on the US markets were “locked to” their original carriers. And this condition was applicable whether the user paid full price or purchased the device under contract.
With the aid of a passcode, the phones are locked. And this passcode is known as a service programming code or master subsidy lock.

A passcode is used to lock an iPhone
It prevents the user from gaining access to the programming menu of the iPhone and also making use of the handset on a different carrier’s network.
While factory-unlocked iPhones have always been sold in Europe, they only got introduced in 2011 in the US.
Why Are iPhones Typically Sold Locked?
When the iPhone first launched on June 29, 2007, in the United States, Apple and AT&T made an exclusive deal. While a user could still activate the device on another GSM carrier, this only becomes possible by hacking (jailbreaking) the iPhone.
Will an Unlocked iPhone Contain a SIM Card?
No, an unlocked iPhone you buy directly from Apple will not include a SIM. But no need to worry as when you choose the cellphone company to use, you can get a SIM card from that company on signing up.
Is It Possible to Use the iPhone with More Than One Carrier at Once?
Yes. You need two things for this: active service as well as an active SIM card from the two companies. To switch the company (in addition to the phone number assigned to your mobile device) that you are using, simply swap the SIM cards in your iPhone. What about those iPhone models with dual-SIM support? We will discuss this shortly.
Will an Unlocked iPhone Work with Any Phone Company?
Yes, every modern iPhone works with any of the popular mobile phone companies, such as the big carriers in the United States (T-Mobile, Verizon, AT&T, and Sprint).
This is owing to the fact that they provide support for both GSM phone networks (that are used by T-Mobile and AT&T) and CDMA (that are used by Verizon and Sprint). On switching from one company to the other, you may have to buy a new SIM card for the new cellphone company; if not, your device will stay the same.
Is It Okay to Buy an Unlocked Phone with the Dual SIM Models?
The iPhone models that come with Dual-SIM support include the XS, the XS Max, the XR, the iPhone 11, and the 11 Pro. On any of these devices, you can use two SIM cards at once. The 1st SIM is a physical card and the second a software-based eSIM. Since two SIMs are available here, there is no need to get an unlocked phone.
You may choose to have the primary SIM card tied to a specific company and make use of the 2nd only for short-term situations, such as overseas travel. Alternatively, you may choose to keep the two SIMs unlocked to enjoy optimum flexibility.
The choice you make will depend on the way you want to make use of the iPhone. While some users go for unlocked phones on principle, others find the flexibility of the dual SIM configuration enough.
Unlocking an Existing iPhone – Is That Even Possible?
Yes, it is quite possible to unlock the majority of iPhones, even if they were originally locked when you got them. To be eligible for this, you shouldn’t be under contract with a cellphone company and must have paid off all your remaining installments on the device.
You won’t be able to do the unlocking yourself, so you are to request the service from your phone company.
What Are the Disadvantages of Chip-Unlocked iPhone?

There are a few disadvantages of chip-unlocked iPhones
One major disadvantage of a chip-unlocked iPhone is that you will always require the chip for your SIM to work in the device. Your SIM card has to be inserted into the phone with the RSIM, without which you will not be able to obtain a network signal. As such, if for any reason, the RSIM is damaged or goes missing, your SIM is useless.
Chip-unlocked iPhones are also more expensive, and that is their primary disadvantage. As the cost of locked phones is subsidized by the carrier, you will find locked iPhones cheaper to purchase upfront. If you intend using the original carrier for as long as you’ve the device and wouldn’t travel abroad, you might not really be gung-ho about getting an unlocked phone.
Any Advantages of Chip-Unlocked iPhone?
The main advantage you will get in an unlocked iPhone is that you will be able to transfer the service to another network carrier without the need to jailbreak. The jailbreaking process is replete with complicated steps and invalidates the manufacturer’s warranty on your device.
To activate a factory-unlocked GSM iPhone on a carrier, you can simply switch your SIM, enabling you to make use of your device on foreign network carriers when on a trip to a foreign country.
However, activating a CDMA iPhone will require slightly more work since you are required to utilize special software for changing your iPhone’s network settings. You can activate a CDMA phone on any network carrier, which accepts the procedure.
In a Nutshell
A chip-unlocked iPhone is a device unlocked with the use of a chip known as RSIM, which could be GEVEY, TPSIM, and other similar products depending on the chipmaker.
Understanding what a chip-unlocked iPhone is and what the disadvantages they offer are, will help you make a smart buying decision if you are looking to get a new phone or make the most of your existing iOS device.
Author:Tijani Mustapha
Deji is a web content developer and tech writer, who is passionate about tech-related topics and issues. A graduate of Physics from the University of Ibadan, he loves writing, conducting research, playing football, and meeting people of diverse backgrounds and interests.
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Are you always concerned about your device safety and privacy? Do you want to ensure you can keep your device as safe as possible from all kinds of sketchy apps? Are you tired of constantly being interrupted by unsolicited ads when running certain programs? Well, this article is for you; it lists 16 sneaky Google Play apps to avoid on your device.
On Tuesday, cybersecurity company, Bitdefender, identified around 17 Google Play apps that employ a variety of tricks to show users series of unwanted ads. App developers have come up with various kinds of tricks to effectively evade Google security protections that cover the applications space.

This is done by employing certain sneaky tactics like flashing ads at random times and spreading their code across multiple files. As at the time of this article, Google had been notified of these apps “and the reported apps are being taken offline,” according to Bitdefender. Although the apps are not particularly malicious, they smuggle themselves into Google Play and evade Google’s vetting system by using tactics that are more known with malware.
Complaints from certain users said that running these apps drained their cell battery quickly, while also displaying unwanted ads. These apps include:
- Car racing 2019
- Background 4K HD
- 4K Wallpaper (Background 4K Full HD)
- QR Code Reader & Barcode Scanner Pro
- File Manager Pro – Manager SD Card/Explorer
- VMOWO City: Speed Racing 3D
- Screen Stream Mirroring
- Barcode Scanner
- QR Code – Scan & Read a Barcode
- Period Tracker – Cycle ovulation women’s
- Wallpapers 4K, Backgrounds HD
- Transfer Data Smart
- Explorer File Manager
- Today Weather Radar
- Mobnet.io: Big Fish Frenzy
- Clock LED
Source
Author:Alfa Baye
Staff Writer