SIM Toolkit: Network & Signal

revolve soft

About this app

Most signal apps dump numbers on you. SIM Toolkit tells you what they mean, what's wrong, and takes you straight to the fix.

HEALTH CHECK — PLAIN-LANGUAGE ANSWERS
• "You're roaming in South Africa and data roaming is off, so mobile data won't work" — with a button to the right setting
• Weak signal vs. interference: know whether to move closer to a window or just a few metres
• Network rejections explained: "Roaming not allowed in this area (cause 13)" and what to do
• Dual SIM tip: "SIM 2 has much better signal here — switch your data SIM"

SIGNAL — EVERY NUMBER, GRADED AND EXPLAINED
• Live signal score (0–100) plus RSRP, RSRQ, SINR, RSSI, CQI for 5G NR, 4G LTE, 3G and 2G — tap any metric to learn what it means
• 5G NSA / 5G SA / LTE-Advanced (4G+) detection and carrier aggregation widths
• Serving cell: band, downlink/uplink frequency, EARFCN/NR-ARFCN, PCI, TAC, cell ID with eNB/sector
• Distance to the tower from timing advance
• Nearby cells and a live signal graph
• Compare both SIMs side by side

SIM — WHAT YOUR SIM AND PHONE ARE ALLOWED TO DO
• Carrier, MVNO brand, home network, phone number (when stored on the SIM), eSIM or physical SIM
• Is your phone carrier-locked? (Android 14+)
• Carrier features on this phone: VoLTE, Wi-Fi Calling, VoNR, backup calling, 5G NSA/SA, hotspot
• Emergency numbers for the country you're in — ideal for travel
• Honest about what Android hides: we show where to find your ICCID and IMEI instead of blank fields

TOOLS — DO SOMETHING ABOUT IT
• Open your carrier's SIM Toolkit (STK) menu for each SIM
• Network mode shortcut to Android's hidden Phone info menu (e.g. LTE only / NR only, where your phone allows it)
• One tap to data SIM, roaming, APN, Wi-Fi calling, network operator and SIM PIN settings
• USSD console: balance and bundle codes with the carrier's reply shown in the app, plus call forwarding, call waiting and caller ID codes
• Find the best spot: a full-screen meter with a tone that speeds up as your signal improves
• Status-bar signal meter (live dBm and 4G/5G) and a Quick Settings tile
• Signal log with handovers, drops, time on 5G/4G/3G, and CSV or KML (Google Earth) export
• Band & frequency calculator
• Share a network report with your carrier's support in one tap

PRIVATE BY DESIGN
• No internet permission: the app cannot send your data anywhere
• No ads, no analytics, no account, no tracking
• Location is only used because Android requires it to read cell towers, and it never leaves your phone

Signal values come straight from your phone's modem; some manufacturers report fewer details than others. Hidden menus and shortcuts depend on what your phone's manufacturer allows.

What’s new

First release: health check with one-tap fixes, per-SIM signal with 5G/LTE band details, dual-SIM compare, carrier features and lock status, SIM Toolkit & network-mode shortcuts, USSD console, best-spot finder, status-bar signal meter and exportable signal log. No ads, no internet permission.