Do you ever think "one smartphone is enough," but as your uses expand to work, studying, and watching videos, you start to feel like "an iPad might be convenient too"?
Especially recently, a surprising number of people are starting to carry both an iPhone and an iPad by cleverly utilizing used devices and rentals.

This article is for working professionals in their early 20s to early 30s who prioritize cost-effectiveness but are a little hesitant about used products. We will explain the practicality, cost, and recommended configurations for carrying two devices.
We'll introduce smart ways to use your iPhone and iPad, and how to buy and use them without fail, based on three axes: "peace of mind, affordability, and practicality."

Why carry both an iPhone and an iPad?

Expanding work and hobbies beyond what a smartphone alone can handle

An iPhone is a central device for daily life, such as communication and social media on the go. However, there are times when the screen feels too small for watching videos, reading, studying, or creative work.
By introducing an iPad as a secondary device, you can achieve the following division of labor:

• iPhone: Calls, social media, taking photos/gathering information when out and about
  
  

• iPad: Watching videos, studying, taking notes, viewing documents, design work
  
  

The difference in usability created by screen size is surprisingly large, and in some cases, work efficiency can improve by 2-3 times. Especially lightweight models like the iPad mini can easily fit into a commuter bag.

Distribute battery load and extend lifespan

A major benefit of carrying two devices is preventing battery degradation.
If you watch videos or read e-books on your iPad, your iPhone's battery life will significantly improve. As a result, you might be able to extend its replacement cycle by 1-2 years.

Since data can be synced via Apple ID and iCloud, you can check LINE messages and Safari history from either device. The appeal of Apple products is the ability to seamlessly switch between two devices in your daily routine without complex settings.

Disadvantages and precautions for carrying two devices

Cost and complexity of management

When you have more devices, cost and management become a concern.
Since buying two new devices easily exceeds 100,000 yen, it's important to reduce initial costs by utilizing used items or rentals.

Also, the hassle of charging, updating, and syncing apps for two devices increases.
In particular, if you're logged in with the same Apple ID, notifications may overlap, or in-app purchases might reflect on both devices, so caution is needed.

Review app and data sync settings

iCloud automatically syncs photos and notes, but if you don't turn off sync settings for each app, it can eat up storage.
Especially with iCloud's free plan (5GB), which fills up quickly, it's a good idea to limit backups on the secondary device.

For security, it's also recommended to differentiate usage, such as "always carry the iPhone, but limit the iPad to home use."

For cost-conscious two-device users, leverage used devices and rentals

Advantages of using refurbished iPhones/iPads

While many express concern about used items, refurbished and warrantied devices can be used with peace of mind.
They can be purchased for 30,000 to 50,000 yen less than new devices, and since many come with Apple ID settings and operational checks already done, you won't struggle with initial setup.

When choosing a used device, keep the following points in mind:

By choosing a store with a well-established maintenance system, you can gain almost the same peace of mind as with a new product.
When looking for a used device, compare options by filtering conditions from PRODIG's Used iPhone List or PRODIG's Used iPad Series List.

Renting is also an option for "trying it out first"

For those who are unsure if they will truly use it before buying, renting is convenient.
By using it for a short period, you can assess how much you truly need an iPad in your lifestyle.

• Available for use for several weeks to several months
  
  

• Try the latest models regardless of manufacturer
  
  

• No cleaning required upon return
  
  

It's perfect for students and professionals who need short-term use, as it allows you to try out carrying two devices while keeping initial costs down.
For more details, please check the PRODIG Rental Official Website.

Roughly! Recommended usage patterns for iPhone and iPad

Work/Study-focused Combination

• iPhone: Schedule management, calls, reminders
  
  

• iPad: Notes, document viewing, web conferencing, cloud memo utilization
  
  

This combination is also suitable for remote work and online classes.
By adding a keyboard and Apple Pencil to the iPad, it can also be used as a PC alternative.

Entertainment/Hobby-focused Combination

• iPhone: Music playback, social media/photography when out
  
  

• iPad: Video viewing, e-books, gaming, illustration creation
  
  

Videos and e-books are uses that maximize the iPad's screen size.
If you choose a lightweight iPad mini or Air, you can use it comfortably on the sofa or in the bedroom.

PRODIG's Used iPad Air List is here

Recommended configuration for family/shared use

Beyond "two devices for one person," "sharing among family members" is also a cost-effective option.
It's also suitable for household division of roles, such as providing an iPad with educational apps for children while parents primarily use their iPhones.

When purchasing multiple used devices together, be sure to check PRODIG's Sale Items List as well.

Examples of recommended iPhone and iPad two-device combinations

The key point when considering two devices is to **"avoid overlapping functionalities and divide their roles."**
The following combinations allow you to comfortably cover your daily needs with good cost performance.

① Compact × Versatile Balanced Type

iPhone SE (2nd generation) + iPad (8th generation)

• Both offer excellent cost performance and are sufficient for light work and video viewing.

• Simple operation with Touch ID, and the 8th generation iPad supports Apple Pencil, making it great for notes.

• The iPhone is pocket-sized, and the iPad is ideal for viewing at home or work.

Recommended for:
People who want to divide usage: "SNS and email on iPhone, reading, videos, and studying on iPad."

PRODIG's Used iPhone List is here
PRODIG's Used iPad Series List is here

② High-performance × Lightweight Mobile-focused Type

iPhone 13 mini + iPad mini (6th generation)

• Both are compact and easy to carry, perfect for commuting and on-the-go use.

• iPhone 13 mini's A15 chip offers fast processing, making photos and videos enjoyable.

• iPad mini (6th generation) supports Apple Pencil 2nd generation, ideal for business notes and on-the-go memos.

Recommended for:
People who travel frequently and want to carry two light devices in their bag.

PRODIG's Used iPhone 13 Series List is here
PRODIG's Used iPad mini Series List is here

③ Long-lasting Stable Type

iPhone 12 + iPad Air (4th generation)

• Both equipped with A14 chip, offering high processing power and 5G compatibility.

• iPad Air can be used for creative work and video editing.

• Ideal for those who want to extend their replacement cycle with long-term iPadOS/iOS update support.

Recommended for:
People who want to use it long-term and also cover creative uses like photo/video editing.

PRODIG's Used iPhone 12 Series List is here
PRODIG's Used iPad Air List is here

④ Cost-Performance Prioritized Light-Use Type

iPhone 11 + iPad (7th generation)

• Used prices are settled, and choosing a device with a replaced battery ensures long-term use.

• iPad 7th generation supports Apple Pencil (1st generation), sufficient for reading, videos, and studying.

• Recommended for students or those starting with a secondary device who want to keep overall costs down.

Recommended for:
Those who "just want to try out two devices" or "want to watch videos/take notes at home."

PRODIG's Used iPhone 11 Series List is here
PRODIG's Used iPad Series List is here

⑤ Creative Type for Photo/Video Enthusiasts

iPhone 14 Pro + iPad Pro (5th generation)

• iPhone 14 Pro's camera performance and iPad Pro's Liquid Retina XDR display are a perfect match.

• Comfortable photo editing, video editing, and design creation on mobile.

• A professional-grade combination that can handle heavy-load tasks with ease.

Recommended for:
People who want to complete social media management, creative work, and digital tasks primarily on their smartphone.

PRODIG's Used iPhone 14 Series List is here
PRODIG's Used iPad Pro Series List is here

Tips for choosing a combination

• Match the balance of chip performance (e.g., A12×A12, A14×A14)

• Leverage the difference in screen size (iPhone small, iPad large)

• If buying used, choose a device with a warranty or that is refurbished.

You can maximize cost performance by staggering generations within the same series.
For example, "iPhone 12 × iPad 8th generation" is also a very popular balanced type.

Cost simulation for carrying two used devices

It's reassuring to know the costs involved when actually carrying two devices.

If you make good use of used items, you can achieve a two-device setup at about 40-50% of the price of new items.
In addition, renting allows you to try it out with "zero initial cost," making it appealing for its low barrier to entry.

Recommended for those who want to buy an iPad cheaply!

While not as high-performance as the latest iPads, the 7th and 8th generation models offer a good balance of performance and price for everyday sub-device use.
They are recommended for the following people:

• Those who primarily want to use it for videos, e-books, and web browsing
  The large 10.2-inch screen is comfortable for watching YouTube and Netflix. Even with A10/A12 chips, full HD videos and light apps run without issues.

• Those who want to use it casually for notes and memos
  It supports Apple Pencil (1st generation), so it can be used for studying or work memos. It has sufficient performance for mainly using handwriting apps.

• Those who want to use it at home for looking things up or viewing recipes
  The price range is such that you won't mind leaving it in the kitchen or living room. It's also popular as a shared device for families.

• Those who want to use it as a sub-screen for their iPhone
  It's perfect for "multi-tasking," such as viewing information found on an iPhone enlarged on the iPad, or checking documents on a separate screen while looking at LINE.

• First-time iPad users or those who want to try it out
  At a more affordable price than new, it's ideal for trying out "how you'll use an iPad." Even for used devices, choosing refurbished or guaranteed ones provides peace of mind.

▶List of refurbished used iPad 7 products - PRODIG

▶List of refurbished used iPad 8 products

Points to note

The 7th and 8th generations are not suitable for demanding tasks such as playing the latest games or video editing.
However, they are still perfectly functional for light use such as browsing, watching, and taking notes.
Even used, grade A to B conditions are perfectly practical.

If you're looking for a sub-device, please check out PRODIG's list of used iPad series here.
Many devices have clearly stated battery conditions and warranty details, allowing you to choose with confidence.

Benefits of using PRODIG

Reliable inspection and warranty system

PRODIG employs strict inspections by specialized staff and a condition ranking (S to C).
Not only the appearance but also the operation, battery, and communication status are checked, which means fewer problems after purchase.

In particular, products ranked A or higher offer "near-new condition" at a reduced price, making them ideal for cost-conscious users.

Smartly replace by combining with trade-in

When replacing your iPhone or iPad, it's also a good idea to trade in your old device through PRODIG's buyback service. By doing "trade-in → purchase" at the same store, you can save time and cost.

For details on the trade-in service, please check the PRODIG Buyback official website.

Renting is convenient for short-term use or trials

For short-term business trips, events, exhibitions, etc., where you "want to use it for a limited period," renting is ideal.
You can choose a device in good condition, and there's no need for maintenance after return.
It can also be used to try out "which screen size suits you best" before purchasing.

PRODIG Rental Official Website here

Frequently Asked Questions (FAQ)

Q1. Is it okay to use an iPhone and iPad with the same Apple ID?
→ Yes, it's generally fine. However, notifications and messages will go to both, so it's recommended to restrict sync targets in the settings.

Q2. Will my communication fees double if I carry two devices?
→ If you use a Wi-Fi model iPad, no additional communication contract is needed. Home Wi-Fi or tethering from your iPhone is usually sufficient.

Q3. What is the useful life of a used device?
→ With a battery replacement, it's typically practical for 4 to 5 years on average. iPadOS support is generally around 6 years from release.

Carrying both an iPhone and an iPad can significantly enhance daily productivity and enjoyment if used effectively.
By not being fixated on new devices and utilizing refurbished used items or rentals, you can intelligently and confidently achieve a two-device setup.

If you "want to try it first" or "are concerned about the warranty," please check the PRODIG official website, which has a well-established inspection and warranty system.
You're sure to find the best balance for your device life.

▶How long can the iPad 8th generation be used? A thorough explanation of OS support, performance limits, and how to smartly buy used!