“Plus 5” Rule Boosts iPhone Wireless Charging Speed – Practical Guide for End‑User Devices
What Happened – ZDNet published a step‑by‑step guide showing how the “Plus 5” rule (adding 5 W to the charger’s advertised output) restores optimal wireless‑charging performance on iPhone 15‑series devices and many Android phones. The article explains why mismatched adapters, cables, or low‑power chargers can throttle charging rates and offers concrete hardware recommendations.
Why It Matters for TPRM –
- Vendor‑supplied accessories that under‑deliver can create hidden operational risk for employees who rely on rapid device turnover.
- Inadequate charging can degrade battery health, leading to premature device replacement and increased supply‑chain spend.
- Demonstrates the need to validate third‑party accessory specifications in procurement contracts.
Who Is Affected – Consumer electronics users, enterprise mobile‑device fleets, IT asset managers, and procurement teams sourcing chargers, adapters, or MagSafe accessories.
Recommended Actions –
- Verify that all wireless‑charging accessories in your inventory meet the manufacturer’s minimum wattage (≥ 20 W wall adapter for iPhone 15).
- Update vendor evaluation checklists to include charger power‑rating verification and MagSafe compatibility testing.
- Communicate the “Plus 5” rule to end‑users and include it in device‑usage policies to avoid performance degradation.
Technical Notes – The issue is not a vulnerability but a performance limitation caused by power‑delivery mismatches. No CVEs, data exfiltration, or malware are involved. The article recommends using certified USB‑C Power Delivery adapters and high‑quality Qi‑compatible pads. Source: ZDNet Security – Plus 5 rule for wireless charging