Marco Valenti
Technical Troubleshooting Editor
Marco is a mobile network engineer turned travel writer. Before joining the eSIMSupra editorial team he spent eight years at a tier-one European mobile operator, where he led eSIM provisioning for travel roaming agreements. His guides focus on the actual cause of activation errors — carrier locks, APN mismatches, regional band support — rather than the surface symptoms.
Expertise
eSIM provisioning, APN configuration, LTE and 5G band support by device and region, activation failure diagnostics, carrier-lock resolution, dual-SIM behaviour on iOS and Android.
Editorial policy
Troubleshooting articles cite each step's actual cause and ship with a testable remediation. Absolute claims about speed or coverage are avoided unless the supporting evidence is specific and cited.
Latest from Marco
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