SIM Explorer
The desktop companion to the online tools — a friendlier front-end to what pySim does on the CLI. Read any card via a PC/SC reader, browse the full file system, and decode every standard file. Free to read and decode; Pro unlocks writing, batch/automation and the eSIM/enterprise workflow.
Read & decode
Genuinely useful on its own — perpetual, no key needed.
- Read a card via any PC/SC reader; browse the full MF/DF/EF tree
- Decode all standard files (IMSI, ICCID, SPN, PLMN lists, service tables, LOCI) — read-only
- Manual single APDU send + response decode
- Export a read-only profile report (PDF / Markdown) of one card
- Bundled offline reference tables (MCC/MNC, EF dictionary, SW list)
- EID read + decode for eUICC cards (read-only)
Write, batch & eSIM
Everything in Free, plus the workflow a working professional bills against.
- Write / update files and PIN/PUK management (with ADM key entry)
- Batch operations: program/read many cards, scripted profiles, CSV in/out
- Profile templates & cloning between programmable test cards; save/restore
- OTA packet compose/inspect against the TS 102 225 structure (structure + test vectors)
- eSIM/eUICC pro: SAIP profile inspect/diff, LPA/activation-code batch decode, EID inventory export
- Scripting / CLI + automation hooks, priority support, free updates
Get the free download
One email unlocks the SIM Explorer free download and exports across every online tool. We send a double opt-in confirmation, then a signed download link.
Thanks — email capture isn't wired up in this preview build yet (it's a scheduled follow-up: Cloudflare Worker → Listmonk → signed R2 link). No email was sent or stored.
Boundary note
Pro handles OTA packet structure and documented test vectors. Production-key crypto stays a services / on-prem conversation, not a shipped binary feature — the same boundary the OTA reference tool observes.