Roaming indicator After the Roaming indicator i see a lock code

You normally can't do that. The phone is locked to Tesco in the UK, you can only use their service provider in the UK. The long code is a PUK Lock / SIM Lock code and will lock you out when you put in another SIM Card. If you want to use it in Cyprus. you use a roaming package with Tesco. Or you buy a Cyprus phone.

https://www.fixya.com/support/r26056685-phone_asking_puk_code

..

Anna, I do not know what a "cordless cell phone" is.
If you mean a cell phone, it is on a Network, such as AT&T or Verizon.
"Roaming" usually means you are outside of the native area of the phone, either far from where you were when you activated the phone, or perhaps you are in a "dead spot" wherever you are currently, such as in a parking garage, out in the deep woods, etc.
Is the cell phone's phone number the exact same Area Code of where you live?
Have you changed Carriers, i.e. from Verizon to (ugh) Sprint?
Have you (or anyone else) changed the SIM card?
Are you making calls from a place that might be blocking the signal from the Cell tower?
Are you in a city or in a rural area.
"Roaming" indicates your phone thinks it is outside the area you subscribed to.
Roaming almost always is more expensive, so find out what is going on.

If it unlocked then how it got locked. with which sim card your mobile locked at&t or tmobile. You said you have unlocked mobile does it roaming lock or sim locked. it may possible that your mobile was temporary unlocked on the basis of roaming otherwise your mobile is sim locked.
To unlock your at&t or tmobile smartphone you need to generate unlock code from imei number of your mobile phone. it will generate four kind of unlock code. if your mobile is hard locked then use defreeze code otherwise use nck code. here is how to unlock at&t sim for lg samsung nokia mobile at united states of america , canada and uk.

I assure that your mobile is sim locked. You did not mention which mobile and with sim service provider gsm or cdma mobile and which country usa , canada or uk.

You need Gsm Mobile Sim Unlock codes for your mobile phone to unlock your mobile. For there are many online app which genearate unlock code from imie number of your mobile phone. for samsung it has 8 digit code and for lg it is 16 digit code. Many mobile need to kind of code nck and defreeze code if your mobile is roaming locked.

To unlock your NOKIA 100 ,use unlock code.Buy unlock code from
Mobileunlocksolutions.com and unlock it from service provider lock.After unlock it you can use any country network.You can avoid roaming charges while traveling to other countries.Because your phone will become sim free phone after unlocking it.

I. Had to
Call tech suppoort to have it removed

This is pretty much what you need to do. Just turn off all the roaming features. However when you roam it typically means you dont have service through Sprint so dont be surprised if when you turn off roaming capabilities your phone doesn't get ANY signal. Here's the link to your phones manual page 112 is about roaming.


Setting Roam Mode
Your phone allows you to control your roaming
capabilities. By using the Roaming menu option, you
can determine which signals your phone accepts.
Choose from two different settings on your phone to
control your roaming experience.
1. Press > Settings > More... > Roaming > Set Mode.
2. Highlight an option and press .
n Sprint Only to access only the Sprint network and
prevent roaming on other networks.
n Automatic to seek service on the Nationwide Sprint
Network. When Sprint service is unavailable, the
phone searches for an alternate service.
Call Guard
Your phone has two ways of alerting you when you are
roaming off the Nationwide Sprint Network: the
onscreen roaming icon and Call Guard. Call Guard
makes it easy to manage your roaming by requiring an
extra step before you can place or answer a roaming
call. (This additional step is not required when you make
or receive calls while on the Nationwide Sprint Network.)
To turn Call Guard on or off:
1. Press > Settings > More... > Roaming >
Call Guard.
2. Select On or Off.
To place roaming calls with Call Guard on:
1. From standby mode, dial 1 + area code + the
seven-digit number and press .
2. Read the message and press .
Note Call Guard is turned on by default on yourphone.

To answer incoming roaming calls with Call Guard on:
1. Press .
2. Read the message and press .
Data Roam Guard
Depending on service availability and roaming
agreements, yourphone may be able to access data
services while roaming on certain other networks. You
can set your phone to alert you when you are roaming
off the Nationwide Sprint Network and try to use data
services such as messaging.
To set your Data Roam Guard notification:
1. Press > Settings > More... > Roaming >
Data Roaming.
2. Highlight an option and press .
n Always Ask (default mode) sets your phone's Data
Roam Guard feature on. You will see a prompt that
will require you to respond anytime you access
data services while roaming.
n NeverAsk turns your phone's Data Roam Guard
feature off. Your phone will not notify you of your
roaming status when you access data services.
Touse data services when Data Roam Guard is active:
© When a notification appears informing you that data
roam charges may apply, press ROAM (left softkey)
to connect.
Note If the Call Guard feature is set to On, you need to
take extra steps to make and receive roaming calls.

you may wont to contact cricket and get verification on your service area........the roaming triangle should only apply to the device main screen when the towers being used have a roaming contract with the provider. you may very well be roaming but not from your device.....you may be roaming in the cellular network though.....contact cricket from another device for troubleshooting options at (866) 274-2538

GOOD LUCK !!!!!!!!

It could be that roaming is disabled either on your phone or on your account.

You should contact t-mobile at 1-877-453-1304 and see if roaming is enabled on the phone.

the phone could be on roaming seeing that tiangle