Assindo answers the calls you miss. To get there, your phone forwards unanswered calls to your Assindo assistant number. Most phones can do this with a short code you dial once.
The quickest way is in the app: open Assindo, go to call forwarding and pick your carrier. On Android, tap Turn on automatically. On iPhone, copy the code the app shows and dial it in the Phone app. The app then places a short test call to confirm it works.
The codes below show X for each digit of your Assindo number. The app shows your exact code, ready to copy.
Before you dial
- Turn off Wi-Fi calling for a moment. Some networks only accept forwarding codes over the mobile network.
- Android: if the code is rejected, go to Settings → Network & Internet → Mobile network and switch off Enhanced 4G LTE / VoLTE, dial the code again, then switch it back on.
- iPhone: if the code is rejected, go to Settings → Cellular → Cellular Data Options → Voice & Data and choose LTE off for a moment, dial the code again, then switch back.
- Dial the code like a phone number and press call. Your phone shows a message when forwarding is on. That message can say busy or unanswered - both mean it worked.
Still not working?
Some carriers switch forwarding off on certain plans (often prepaid) or charge for forwarded minutes. If the code fails, call your carrier and ask them to turn on conditional call forwarding when unanswered to your Assindo number (shown in the app). You can also message us from Settings → Chat with the founder in the app.
Your carrier
United States
AT&T
Call forwarding can only be managed from the wireless phone, not online; no international forward-to numbers; forwarding overrides voicemail
Forwarded calls billed for length of call; may incur long-distance/roaming; some plans don't count forwarding minutes against plan
Based on the carrier's own instructions: source
Boost Mobile
Based on the carrier's own instructions: source
Consumer Cellular
Based on the carrier's own instructions: source
Cricket Wireless
Call forwarding included in all Cricket plans; device guides list Always / when busy / when unanswered / when unreachable via phone settings menu
Not stated
Based on the carrier's own instructions: source
Helium Mobile
Acceptable Use Policy prohibits 'extensive call forwarding or use of call forwarding ... to act as a bridge to chat lines or other conferencing facilities' (normal missed-call forwarding not prohibited).
Based on the carrier's own instructions: source
Metro by T-Mobile
Prepaid; Metro T&Cs note call forwarding can generate multiple charged calls/messages; third-party sources say call forwarding may be a paid add-on (~$1/mo) - unverified
Not stated on official pages found
Based on the carrier's own instructions: source
Mint Mobile
Not stated on page
Based on the carrier's own instructions: source
Spectrum Mobile
Domestic 10-digit numbers only; also manageable in My Spectrum account/app; forwarded unanswered calls skip voicemail.
Based on the carrier's own instructions: source
Straight Talk (AT&T SIM)
'Only available in select areas and on select handsets'; codes may depend on underlying network SIM
Not stated
Based on the carrier's own instructions: source
Straight Talk (T-Mobile SIM)
'Only available in select areas and on select handsets'; codes may depend on underlying network SIM
Not stated
Based on the carrier's own instructions: source
Straight Talk (Verizon SIM)
'Only available in select areas and on select handsets'; codes may depend on underlying network SIM
Not stated
Based on the carrier's own instructions: source
T-Mobile
Cannot forward to international numbers; only 10- or 11-digit numbers; roaming forwarding depends on host network
Not stated on official calling-services page (prepaid: forwarded minutes deduct per plan is not explicitly stated)
Based on the carrier's own instructions: source
Tello
Plan must include data to enable call forwarding; no international forward-to numbers; forwarding disables Tello voicemail.
Feature free; forwarded-call minutes are deducted from plan / Pay-As-You-Go balance.
Based on the carrier's own instructions: source
Total Wireless
'Only available in select areas and on select handsets'
Not stated
Based on the carrier's own instructions: source
Ultra Mobile
Scam Screener does not work while call forwarding is set.
Plan terms (search snippet): call forwarding may use minutes for the entire call length.
Based on the carrier's own instructions: source
US Cellular
Unknown - official site gone
Based on the carrier's own instructions: source
US Mobile (Dark Star - AT&T network)
Codes differ per network; Dark Star iPhones need iOS 18.5+ for settings-based forwarding.
No plan fee; 'airtime charges apply to all forwarded calls according to your calling plan'.
Based on the carrier's own instructions: source
US Mobile (Light Speed - T-Mobile network)
Codes differ per network; Dark Star iPhones need iOS 18.5+ for settings-based forwarding.
No plan fee; 'airtime charges apply to all forwarded calls according to your calling plan'.
Based on the carrier's own instructions: source
US Mobile (Warp - Verizon network)
Codes differ per network; Dark Star iPhones need iOS 18.5+ for settings-based forwarding.
No plan fee; 'airtime charges apply to all forwarded calls according to your calling plan'.
Based on the carrier's own instructions: source
Verizon
Prepaid follows same codes; forward-to must be a US 10-digit active line; no international forwarding; must be in Verizon coverage to set up
No monthly fee on most plans; forwarded calls billed per plan minutes if not unlimited
Based on the carrier's own instructions: source
Visible
Available to any active Visible member; all plans
None stated (included)
Based on the carrier's own instructions: source
Xfinity Mobile
Must be turned on from the Xfinity Mobile device; domestic numbers only; forwarded unanswered calls do not reach mobile voicemail.
Included at no additional cost (per page).
Based on the carrier's own instructions: source
Canada
Bell
Based on the carrier's own instructions: source
Chatr
Based on the carrier's own instructions: source
Fido
Based on the carrier's own instructions: source
Fizz
Freedom Mobile
Based on the carrier's own instructions: source
Ice Wireless
Based on the carrier's own instructions: source
Koodo
Based on the carrier's own instructions: source
Public Mobile
Based on the carrier's own instructions: source
Rogers
Based on the carrier's own instructions: source
SaskTel
Based on the carrier's own instructions: source
Telus
Based on the carrier's own instructions: source
Virgin Plus
Based on the carrier's own instructions: source
United Kingdom
EE
Diverts to other numbers reportedly pay monthly only (PAYG = voicemail only) - from EE Community, not an official help page.
Based on the carrier's own instructions: source
giffgaff
None stated.
Based on the carrier's own instructions: source
iD Mobile
iD cannot set forwarding on the customer's behalf.
Based on the carrier's own instructions: source
O2
Call divert not supported on Pay & Go per O2 Community. Pay Monthly only.
Based on the carrier's own instructions: source
Sky Mobile
Unknown.
Based on the carrier's own instructions: source
SMARTY
None stated.
Based on the carrier's own instructions: source
Three
UK destination numbers only. Three Community says Customer Services can set diverts; PAYG supported (deducts credit).
Based on the carrier's own instructions: source
Vodafone
PAYG: 'you can only divert incoming calls to voicemail' - Assindo forwarding impossible on Vodafone PAYG.
Based on the carrier's own instructions: source
Australia
amaysim
No international diversions.
Based on the carrier's own instructions: source
Aussie Broadband Mobile
Belong
Conditional forwarding supported (roaming FAQ: forwarded calls use your call minutes).
Based on the carrier's own instructions: source
Boost Mobile AU
'Built right into every unlimited call plan.'
Based on the carrier's own instructions: source
Dodo Mobile
iiNet
Also manageable in Toolbox > Settings > Call Forwarding.
Based on the carrier's own instructions: source
Kogan Mobile
Forwarding to another number requires the paid 'Premier Access Bolt-On'.
Based on the carrier's own instructions: source
Lebara AU
Unknown.
Based on the carrier's own instructions: source
Moose Mobile
Supported; no extra charge on unlimited plans to AU numbers.
Based on the carrier's own instructions: source
Optus
Third-party sources say Optus prepaid may need forwarding unlocked via 555; not confirmed on optus.com.au.
Based on the carrier's own instructions: source
Telstra
Services activated on/after 8 Oct 2003 cannot forward to international numbers (AU number fine).
Based on the carrier's own instructions: source
TPG
Ring time: **61*121*secs# (max 30).
Based on the carrier's own instructions: source
Vodafone
Prepaid: can only forward to voicemail or Call Catcher, no diversion to other numbers. Plans cannot divert to 13/1300/1800.
Based on the carrier's own instructions: source
Codes checked against each carrier's published instructions on 2026-10-07. Carriers change their codes from time to time - if one stops working, tell us in the app.