What is an Unlocked Phone (Jageumje)?

Hello.

1. Key Points

It is known that more and more people have recently been purchasing unlocked phones (jageumje) for their mobile use. In the past, most people purchased phones by visiting a carrier store. As the proportion of people buying unlocked phones has increased, mobile phone store revenues are understood to have declined compared to before. Let us take a look at what an unlocked phone is, how to activate it, and what its advantages and disadvantages are. What is an unlocked phone (jageumje)? An unlocked phone refers to a mobile phone that was not purchased through a carrier and has not yet been activated — in other words, a factory-fresh unregistered device. It is understood to mean a phone that you purchase and then sign up for a rate plan on your own. Currently, many people use phones under mandatory contracts with carriers such as SKT, KT, or LG. In contrast, an unlocked phone comes with no such contract, meaning you have the freedom to choose your own rate plan. This means there is no early termination fee, no carrier-specific pre-installed apps, and no obligation to use add-on services — all of which are considered major advantages. Activating an unlocked phone

2. Detailed Explanation

How to activate An unlocked phone has no obligation to sign up with any particular carrier or rate plan. Therefore, if you have purchased an unlocked phone, it is important to research and decide in advance which carrier you want to use and which rate plan suits you. You can choose from the three major carriers — SKT, KT, and LG — or go with an MVNO (budget carrier), which has become very popular recently. Depending on how much you use calls and data on a regular basis, you should select an appropriate plan and purchase the corresponding SIM card. Since many SIM cards come pre-configured with a specific plan, you can order a SIM online and have it delivered. It is also possible to purchase a SIM card at convenience stores such as GS25, not just online. Meanwhile, if you already have a phone in use and want to switch to an unlocked phone while keeping your current plan, you can simply remove the SIM from your existing phone, insert it into the unlocked device, and it will activate immediately. This way, you can continue using

3. How to Use

your existing rate plan as-is. Advantages of an unlocked phone The biggest advantage of an unlocked phone is that there is no contract. In most cases, the device is purchased outright, so there are no installment payments. If you purchase an unlocked phone on a card installment plan, installment payments would apply for that period. Another major advantage is carrier flexibility. With a carrier-activated phone, you are typically locked into that carrier's plans; with an unlocked phone, you are free to switch SIM cards and use any carrier you like. SIM swapping is possible freely — for example, moving from an iPhone to a Galaxy, or from a Galaxy to an iPhone. Additionally, you can use MVNO (budget carrier) plans. The main appeal of MVNOs is their low rates. By purchasing an unlocked phone and pairing it with an MVNO plan, you can use your phone at a very low cost. This can work out cheaper than buying through a carrier store, which is why the number of people doing this is steadily increasing

4. Additional Information

. Disadvantages of an unlocked phone The biggest disadvantage of an unlocked phone is the high upfront device cost. Most phones tend to cost well over one million Korean won (approximately +). When buying an unlocked phone, this amount typically needs to be paid in full upfront, though installment payment by credit card may be available depending on circumstances. However, while carrier stores offer installment plans of up to 24 or 30 months, credit card installments rarely stretch that long. Interest-free installment periods are typically only 6 to 12 months. Another significant drawback is that you have to handle everything yourself when activating the phone. While inserting a purchased SIM card is all it technically takes, you need to figure out on your own which plan suits you, where to buy the SIM and how to proceed, and handle tasks such as data transfer, photo transfer, and contact transfer that carriers previously took care of at their stores — which can be a notable inconvenience.