OLD PHONE COMPATIBILITY WORKSHEET
Companion: https://yenra.com/3g-phones/
Prepared October 12, 2026. Recheck current operator requirements before use.

Use one copy for one exact handset, operator and country. This worksheet
organizes evidence; it does not certify network or emergency-call support.
Keep the record private. Do not include a full IMEI in a publicly shared copy.

1. DEVICE
Manufacturer and marketing name:
Exact model / regional variant:
Installed software version:
Matching manufacturer manual or specification URL:
GSM / EDGE bands:
UMTS / WCDMA bands:
CDMA2000 capability, if any:
LTE / 5G bands and voice capability, if any:
Carrier lock status and source of confirmation:

2. INTENDED USE
Country, operator and usual locations:
Required services (voice / SMS / picture messages / mobile data / other):
Travel destinations and roaming requirements:
Required apps and supported OS versions:

3. CURRENT OFFICIAL EVIDENCE
Date checked:
Operator compatibility-check URL and result:
Operator support reference (keep personal information private):
Local network and retirement information URL:
Normal voice / VoLTE confirmation for this model and software:
Emergency-call compatibility confirmed through official process:
SIM, plan, provisioning or update requirements:
Roaming confirmation, if needed:
Unresolved questions:

Do not place a test call to an emergency number. Ask the provider how it
confirms compatibility. Normal call success alone does not establish this.

4. ORDINARY CHECKS AFTER PROVIDER SUPPORT IS CONFIRMED
Follow operator setup guidance. Briefly disable Wi-Fi for cellular checks.
Use a consenting contact for ordinary calls and messages.
Location and date:
Outgoing ordinary call / two-way audio:
Incoming ordinary call / two-way audio:
SMS sent and received:
Picture or group message, if required:
Small trusted web page over cellular data:
Wi-Fi restored if desired:
Remaining problems and support response:

These checks do not prove coverage everywhere, emergency-call capability,
roaming or continuing future support.

5. DECISION
[ ] Operator confirms required services; ordinary checks support intended use.
[ ] A service or compatibility question remains unresolved; seek support.
[ ] Replace for cellular use; assess old device for limited reuse separately.
[ ] Offline reuse only. Tasks actually verified:

Files / contacts exported and checked on another device:
Model-specific account removal / erasure instructions if transferring device:

Recheck when network, plan/SIM, software, required apps or travel changes.
Sources and explanation: https://yenra.com/3g-phones/