How to Avoid Problems with Used Smartphones | How to Introduce Them Safely and Affordably

"Are used smartphones really safe? The invisible risks of blacklisted phones, battery degradation, and water damage are scary." Many people probably feel this way. Especially when introducing multiple smartphones and tablets for corporate use, it's important to prioritize safety as well as cost.

This article thoroughly explains how to avoid problems when introducing used smartphones safely and affordably. We will introduce reliable selection methods and tips for cautious users in their 20s and early 30s, as well as those considering corporate adoption.

5 common problems with used smartphones

To avoid problems when purchasing a used smartphone, it's important to first know what kind of problems can occur.

Let's look at 5 typical examples.

Blacklisted (usage restrictions)

If the previous owner defaults on their device payments, carriers may impose usage restrictions (blacklist). This poses a risk of sudden communication outages, so caution is advised.

Water damage and hidden defects

Water damage or internal damage from drops, which are not visible to the naked eye, are also common problems with used smartphones. Sensors or microphones may not function properly.

Battery degradation and reduced maximum capacity

Since the devices are used, the maximum battery capacity is often lower than new devices, and in some cases, they cannot be used for long even after a full charge.

Malicious apps and residual personal information

If purchased from an untrustworthy vendor, previous user account information or malicious apps may remain on the device.

Expired warranty and missing accessories

The device may not come with a warranty, or accessories such as chargers and SIM ejector tools may be missing. This is especially important to note for corporate introductions.

7 measures to avoid problems

What measures can be taken to avoid the problems mentioned above?

We have summarized some examples, so please be careful when purchasing.

1. Pre-check IMEI and blacklist status: Use the device's serial number to check its blacklist status on the carrier's official website. Stores that offer a permanent blacklist guarantee are safe.

2. Complete factory reset + OS/app updates: Enhance security and completely erase previous user data by performing a factory reset and OS updates.

3. Water damage indicator and operation check: Check the indicator inside the SIM slot and verify basic operations (touch, camera, audio).

4. Check battery health: On iPhones, you can check the maximum capacity in "Settings > Battery" (80% or more recommended).

5. Perform a virus scan: Use Avast or McAfee to detect and remove suspicious apps.

6. Choose devices with a warranty: Prioritize devices with a 3-6 month store warranty.

7. Choose a specialist store for corporate use: For large-scale deployments, a corporate-friendly store with established inspection and support systems is safer.

Quality control and support necessary for corporate adoption

Smartphones are purchased not only by individuals but also by companies and organizations for business use or as testing devices.

Purchasing from a shop that can provide the following services will reduce your burden and lead to a satisfying purchase.

• Kitting support for multiple devices: It is ideal to choose a vendor who can deliver devices with initial settings and apps already installed.

• Contract for theft/loss response: Check for systems such as MDM and remote lock.

• Availability of invoices, replacement devices, and long-term warranties: Check if corporate-specific support services are comprehensive.

Benefits of introducing used smartphones with PRODIG

All items cleaned, tested, and guaranteed

All devices come with a warranty after undergoing operational checks, internal cleaning, and initialization.

We handle carefully selected, high-quality used smartphones, and even if any problems arise, they are generally covered by a warranty, providing peace of mind.

Kitting and support through a dedicated corporate contact

We also offer setting support for large-scale deployments and business-specific configurations.

If you consult with us in advance, we will accommodate your requests as much as possible.

Corporate reception: https://prodig-shop.com/pages/b2b-reception

In-person verification and buyback services at the Akihabara store

You can inspect the actual product before purchasing, and we also offer trade-in services for unwanted devices.

There's also an official X account that provides the latest information about the store, so feel free to check it out if you're interested.

Akihabara store latest information: https://x.com/prodig_inc

Flexible introduction through combination with rental, buyback, and repair services

Rentals are available for short-term use or temporary introduction.

In addition to selling used smartphones, we also offer rental, buyback, and repair services, so please consult us to find the optimal solution.

[Used device sales] https://prodig-shop.com/

[Rental] https://prodig-rental.com/

[Buyback] https://prodig-kaitori.com/

[Repair] https://smart-partner.jp/

Summary | Safe introduction with a reliable store

With proper prior checks and the selection of a trustworthy vendor, used smartphones can be a very advantageous and practical option. For those considering corporate adoption, utilizing a corporate-specialized store like PRODIG can minimize risks and enable smooth business operations.

Used smartphone list: https://prodig-shop.com/collections/

Corporate consultation desk: https://prodig-shop.com/pages/b2b-reception