Mobile Networks

# Mobile Networks 4.0.1

For **Minecraft 1.21.1 / NeoForge**, requiring **Simple Voice Chat**.

## New And Improved

- **Independent four-bar reception.** Signal bars now depend on distance within
  each technology band, rather than being fixed by the connection type. Enjoy
  full H+ reception or weak one-bar 5G. 5G+ and 5G share their bar range and may
  fluctuate at the weakest reception without adding or losing bars.
- **Call mini-panel status.** The translucent call preview now shows the
  in-world time, four reception bars, the current technology and roaming status.
  It stays centred on the left at a fixed size across GUI scales, and reuses
  existing status updates without extra server queries or network traffic.
- **E+ migration.** E+ is now E. Existing antenna, network, plan and roaming
  settings migrate automatically without deleting networks or shrinking the
  maximum antenna range.
- **Unlimited linked Gram accounts.** The old five-account cap is gone.
  The account dropdown loads bounded pages and supports mouse-wheel navigation
  forwards and backwards.
- **More wheel navigation.** Scroll network lists, server administration,
  operator plans, beneficiaries, player permissions, roaming settings,
  included players, carrier plans and Gallery with the mouse wheel.
- **Optional vanilla text chat.** Disabled by default. Singleplayer settings
  include an English/Spanish roleplay warning before enabling it. Dedicated
  servers control it through `config/mobilenetworks-gameplay.toml`.
  Server policy wins; differing local preferences do not block joining.
- **Underwater reception loss.** A shallow dive sharply weakens reception;
  a few blocks deeper mean no service even beside an antenna. Calls, data and
  automatic network selection all respect this restriction.

## Fixes Retained From The First 4.0.1 Build

- Antennas and server blocks drop their item with stone-tier or better pickaxes.
  Better pickaxes mine faster.
- Persistent automatic network selection below **Scan for networks**, with
  permitted-network fallback and existing roaming/plan limits.
- Lightweight background coverage monitoring and unavailable-network notices
  without opening the phone.

## Compatibility

- Update **both the server and every client to this revised 4.0.1 build**.
  The networking protocol changed from the first 4.0.1 build. Previous JARs
  are kept separately; this four-bar correction keeps protocol 13.
- Existing worlds, subscriptions, phone numbers and Gram accounts are preserved.
- English and Spanish remain supported, including automatic language selection.
- Original call sounds and textures are unchanged. Voice still uses its existing
  UDP port, normally **24454**.
- Coverage queries remain cached, bounded and restricted to already-loaded
  chunks. Gram accounts are paged to avoid oversized packets.