It is possible to convert an unmodified rotary phone into a functional LTE cellular phone using an ESP32-S3 and a cellular modem.

Technology Conflict Software DevelopmentSep 1, 2026score 0.456 posts · 1 replies across 4 instances

The thread discusses an open-source project called RotaryCell, which enables traditional rotary phones to function over LTE networks. The project uses an ESP32-S3 controller and a cellular modem to convert vintage hardware into modern portable cellular phones without permanent modification.

Claims

Parent: TechnologyEntity: RotaryCell projectSub-entity: LTE conversionImpact: positiveDate: Sep 1, 2026Target: RotaryCell project

Source posts

@[email protected]

RotaryCell: Making an unmodified rotary phone work over LTE with an ESP32-S3

https://github.com/fregacmols/RotaryCell

Comments: https://news.ycombinator.com/item?id=49517297

#HackerNews #RotaryPhone #LTE #ESP32S3 #TechInnovation

0 boosts · 0 favs · 0 replies · Sep 1, 2026

#hackernews#rotaryphone#lte#esp32s3#techinnovation

@[email protected]

RotaryCell: Making an unmodified rotary phone work over LTE with an ESP32-S3 - https://github.com/fregacmols/RotaryCell

#hackernews

1 boosts · 0 favs · 1 replies · Sep 1, 2026

#hackernews

@[email protected]

RotaryCell: Making an unmodified rotary phone work over LTE with an ESP32-S3

Link: https://github.com/fregacmols/RotaryCell
Discussion: https://news.ycombinator.com/item?id=49517297

0 boosts · 0 favs · 0 replies · Sep 1, 2026

@[email protected]

RotaryCell: Making an unmodified rotary phone work over LTE with an ESP32-S3
https://news.ycombinator.com/item?id=49517297
#hackernews #tech

0 boosts · 0 favs · 0 replies · Sep 1, 2026

#hackernews#tech

@[email protected]

RotaryCell: Making an unmodified rotary phone work over LTE with an ESP32-S3
https://github.com/fregacmols/RotaryCell

https://news.ycombinator.com/item?id=49517297

0 boosts · 0 favs · 0 replies · Sep 1, 2026