Requirements before specifications
Buying begins with the work, communication and access the device must support. A clear brief prevents a premium feature from hiding a missing port, incompatible application, inaccessible control or support period that ends too soon.
List the five most important tasks, every must-run application and accessory, where the device will be used, who must use it and the minimum support period. Eliminate any option that fails a genuine must-have before comparing speed, camera features or design.
Write a one-page device brief
- Tasks: Name the repeated activities, not broad labels such as “work”, “study” or “creative use”.
- Software: Record exact applications, operating-system requirements, plug-ins, games, peripherals and account restrictions.
- People: Include accessibility, language, vision, hearing, dexterity, cognition and shared-use needs.
- Place: Consider travel, desk space, lighting, dust, moisture, signal coverage, charging and theft risk.
- Data: Estimate current storage, expected growth, backup method and whether sensitive work may be stored locally.
- Lifetime: Set a minimum support horizon and identify which battery, port or application failure would end useful life.
Choose the form factor before the model
| Device | Usually strongest when | Questions that decide suitability |
|---|---|---|
| Phone | Communication, authentication, navigation, photography and short tasks must travel everywhere. | Screen and keyboard comfort, battery endurance, signal and SIM support, camera need, repair and update life. |
| Tablet | Reading, media, drawing, forms or touch-first work benefits from a larger portable screen. | Desktop-class application needs, keyboard and pointer support, ports, file handling and shared use. |
| Laptop | Full applications and sustained typing are needed in more than one place. | Weight, battery, display, keyboard, ports, thermal performance, repair access and docking cost. |
| Desktop | Performance, ergonomics, upgradeability or repair matters more than portability. | Separate display and accessories, space, energy use, noise, component access and backup power needs. |
Translate each specification into an outcome
Performance
Ask which application, project size, game or workflow needs it. A benchmark is useful only when it represents the task and sustained conditions that matter.
Memory and storage
Measure present use, working headroom and growth. Check whether storage or memory can be expanded and what cloud storage will cost.
Display and input
Judge readable size, brightness, glare, colour need, refresh behaviour, keyboard, pointer, touch and assistive-technology compatibility in person where possible.
Connectivity
Confirm ports, charging standard, Wi-Fi, Bluetooth, mobile bands, eSIM or SIM, external displays and the exact accessories already owned.
Battery
Use independent task-relevant evidence where available, then ask how the battery is serviced, what replacement costs and whether performance changes on battery power.
Support and repair
Record a dated source for security updates, parts and repair. “Latest model” is not a support commitment.
Test the shortlist during the return period
- Install the exact essential applications.
- Connect every critical accessory and display.
- Try representative files and workloads.
- Check calls, signal, Wi-Fi and Bluetooth where used.
- Use accessibility features with the real user.
- Inspect battery, heat, fan noise and charging behaviour.
- Confirm backup and recovery can be configured.
- Save the listing, support promise, warranty and receipt.
Useful official comparison evidence
The ENERGY STAR computer programme provides current efficiency criteria and a certified-product finder. For smartphones and slate tablets placed on the EU market from 20 June 2025, the EU energy label consumer guide explains energy efficiency, battery endurance, drop resistance, repairability and ingress-protection information. These labels answer part of the brief; they do not replace application, accessibility, support or local-network checks.
Choosing a phone or computer FAQs
How much memory or storage do I need?
Start with measured present use and the largest real task, then add sensible headroom for the intended ownership period. Generic numbers age quickly and can be misleading. Check application requirements, storage growth and whether expansion is possible.
Should I buy a laptop or desktop computer?
Choose a laptop when genuine portability is necessary. Choose a desktop when a fixed workspace, easier component replacement, sustained performance or better ergonomics matters more. Include the display, keyboard, battery replacement and docking costs in the comparison.
Are online specifications enough to choose a device?
No. Specifications cannot prove keyboard comfort, display readability, accessibility, signal quality, noise, battery behaviour or compatibility with every accessory. Test the highest-risk assumptions with the real user and workload.
Continue your device decision
Use the next guide that matches the buying, support, repair, backup, migration, resale or disposal question you still need to resolve.
