Illustration generated by IA.
12 8 min
Second hand
Condition, battery, accessories, warranty and seller: a convenient checklist to compare a used or reconditioned product before purchase.
View the fictional worked example : Used or reconditioned
Read the definition of the grade specific to each seller. Identify the professional or special status of the seller. Check battery, accessories, compatibility and locking.
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Check the checklist : Used or reconditioned
AI-generated illustration.
Framed vignette.
13 6 min
Before a new purchase
A method for comparing diagnostic, repair estimate, new or reconditioned replacement, cost of use and life uncertainty.
View the fictional worked example : Repair or replace a device
Describe the symptom and keep the exact reference. Ask for a quote that separates diagnostics, parts, labour and transport. Compare the same service over the same duration.
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Check the checklist : Repair or replace a device
AI-generated illustration.
Framed vignette.
14 5 min
Daily travel
Measure the computer with its cover, check the dimensions of the compartment and arrange charger, documents, drink and storage according to your journey.
Measure the computer with its protection. Read the dimensions of the compartment, not just the thumbs. List all the objects on the journey.
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Check the checklist : A bag adapted to his computer
AI-generated illustration.
Framed vignette.
15 6 min
High-tech and IT
Compare software, memory, storage, screen, connectivity, autonomy and maintenance to choose a laptop suitable for your real use.
View the fictional worked example : Choose a laptop
List the software and their official prerequisites. Record the complete references of each configuration. Provide charger, adapters and backup in the budget.
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Check the checklist : Choose a laptop
AI-generated illustration.
Framed vignette.
16 6 min
Compare characteristics and costs
Compare the power, ports, load sharing, cable length, and data or video functions required.
View the fictional worked example : Charger and USB-C cable: check compatible functions
See the features of the appliance before the accessories. Read the power sharing table, not just the facade value. Do not deduce the functions of the USB-C form alone.
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Check the checklist : Charger and USB-C cable: check compatible functions
AI-generated illustration.
Framed vignette.
17 7 min
Compare characteristics and costs
Compare the cartridges, advertised yields, useful functions and recurring costs before choosing a printer.
View the fictional worked example : Printer: consumables compatibility and cost per page
Compare devices for the same volume and documents. Check consumables with the exact model. Keep the same method of return between offers.
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Check the checklist : Printer: consumables compatibility and cost per page
AI-generated illustration.
Framed vignette.
18 6 min
Home Internet
Distinguish internet and Wi-Fi coverage, compare measurements per room and choose a repeater or a suitable network after the first checks.
View the fictional worked example : Improving the Wi-Fi of housing
Distinguish internet connection and indoor network. Measure several parts under the same conditions. Optimize the location before purchasing.
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Check the checklist : Improving the Wi-Fi of housing
AI-generated illustration.
Framed vignette.
19 6 min
Telephone and digital use
Compare a smartphone from your applications, storage, battery, software tracking, and reception and migration controls.
View the fictional worked example : Choose a long-term useful smartphone
Identify applications, storage and network. Compare exact variants. Document battery and software tracking.
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Check the checklist : Choose a long-term useful smartphone
AI-generated illustration.
Framed vignette.
20 6 min
Television and audiovisual equipment
Compare a TV according to room, dimensions, devices to connect, applications, energy label and complete installation.
View the fictional worked example : Choose a TV for your room
Measure screen with foot and installation. List each device to be connected. Check applications and functions of the reference.
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Check the checklist : Choose a TV for your room