Find quick tips, suggestions and support on how to use your Cat phone to its full potential

S40 FAQs

Browse the FAQs below to find quick answers to your questions and if you don't find the answer, please tell us.

My phone is broken, what options do i have?

1. If your phone is in warranty, you can get it repaired. Contact Us and one of our agents will arrange for your phone to be picked up and repaired free of charge.


2. You can trade in your broken phone and get money off a new device available on our website. To find out which phones are eligible within the Trade In Scheme, click here.

How do I perform a reset, when my screen is blank?

1. The device has an embedded battery that can only be accessed by authorised personnel.
2. To reset the device, open the SIM card and SD card door, behind the door to the right is an “OFF” button.
3. Depress this button and the device will power down, restart the device.
4. Device will now power on, perform and charge as expected.

What should I do if my home page is not fully populated following the initial set up of the device?

1.   You should simply power off and then power back on the device once, this will finalise installation.

My phone takes too long to dial a number. Can I change this?

1.  In some instance the default dialler in Android Lollipop can take more time to dial a number. This can be improved by downloading a new dialler from Google Play and setting this as your default.

How do I resolve when Poor Sound Quality is experienced following immersion in water?

1. If the handset has been subject to immersion in water then the microphone and speaker will need to dry out for them to resume to normal functionality.
2. Place the device in an area where the microphone and speaker can dry out.

How can I select Glove Mode for improved response when wearing gloves?

1. Go to the settings Menu.
2. Access the display option and the enable “Glove Mode”.

What is the yellow button for and how do I use this?

1. This is a programmable button, which has a number of options
2. Go to the settings menu, scroll down to “Programmable Key” and select
3. This will open a selection that you can choose your favourite from, for example Camera
4. Then select ‘OK’
5. When you return to the home screen now when you long press on the programmable button the device will go to your selected view.

How do I find my IMEI Number?

1. This can be found on the outside of the box that you received your phone in and makes up part of the Approval’s label
2. If the IMEI is not available, type into the device via the keyboard*#06# a pop up box will show the device IMEI

How do I know there is a device update available, how do I check I have the latest SW?

NOTE: When a new Firmware/Software is available, notifications are sent out to all CAT S40 devices.
On the home screen an icon will show in the notification panel. When the icon appears you can drag down the notification panel and select.
To manually update:
1. Go to settings menu
2. Scroll to the bottom of this screen, and select “About phone”
3. Select the “System updates” option
4. Select the “Yes” option
5. The device will check the battery charge level and may ask you to further charge

How do I carry out a Factory reset on the device?

Note: Before performing this activity, ensure you have backed up and secured your data.
1. Go to settings menu
2. Select Backup & Reset, select “Factory data reset”
3. Select “Reset phone”, and “Erase everything”
4. The device will then reboot

How do I change the default SMS app?

1. Go to Settings menu
2. In the Wireless & Networks section tap “More”
3. On the next screen select “Default SMS app”
4. A popup window will appear, where you can change the default SMS app
5. Note: the selected app will manage, receive and send all your text messages

How do I enable/disable delivery report and read report for messages?

1. Launch the Messaging app
2. Within the app bring up the Settings menu
3. Scroll down to “Text (SMS) messages” section
4. Next to “Delivery reports” tick to enable/disable delivery reports for SMS

Note: read reports are not available for SMS messages
5. Scroll down to “Multimedia (MMS) Messages” section
6. Next to “Read reports” and “Delivery reports” tick to enable/disable read and delivery reports for MMS

How do I customise the Notifications, sound and vibration for incoming messages?

1. Launch the Messaging app
2. Within the app bring up the Settings menu
3. Scroll down to “Notifications” section
4. Next to “Notifications” tick to enable/disable notifications
5. Select the “Sound” menu to select required ringtone
6. Next to “Vibrate” tick to enable/disable vibration for incoming messages

How do I turn On/Off predictive text?

1. Go to Settings menu
2. Scroll down and select “Language & Input”
3. Select the settings Icon to the right of the “Google Keyboard” option
4. Scroll down and select “Text Correction” then select the level of correction that you require

How do I enable/disable Bluetooth and connect Bluetooth tethering?

Note: Bluetooth tethering is subject to being included in your data package with your Network Operator.
On the device:
1. Go to the settings menu and enable/disable. In this case enable.
2. Select “More”
3. Select “Tethering and Portable Hotspot”
4. Select “Bluetooth tethering”, return to the previous screen and then return once more to settings window
5. Select Bluetooth to make your device discoverable

Next steps:
1. On your PC/Lap top search for Bluetooth devices
2. Select your device and connect to it
3. Once your device is connected and the drivers are successfully installed, click on your device from the list of connected devices - tethering complete

How do I pair to another Bluetooth device?

1. Go to Settings menu
2. Beneath the Wireless and Networks settings you can see the Bluetooth button.
3. Select Bluetooth by tapping on Bluetooth
4. The “Search for Devices” will start
5. Select the device you wish to connect to in the list displayed
6. Confirm the passkey shown on your device and the device you want to pair with is the same and then select “Pair”

How can I transfer data to another device via Bluetooth (for example an image)?

1. Go to Gallery menu
2. Select the folder that contains the file that you wish to transfer
3. Select the image that you intend to forward, select icon at the top of the page, select Bluetooth
4. Select the device to send to and send

How do I copy contacts from the SIM card to the Device?

1. Go to the “People” menu
2. Select “Import from SIM card”
3. Select “Phone” and then in settings select "all"
4. Then press the “tick” mark, Import contact & select "OK"

How do I Clear the cache and browser History?

1. Go to “Chrome” menu
2. Select the Menu and then settings
3. Select “Privacy” option
4. At the bottom of the screen is the message “Clear Browsing data” select
5. Select the cache, browsing history and other to be cleared

How can I back up data to an external storage device?

On your Cat S40 device:
1. Go to the settings menu.
2. Select “Storage” option, select setting menu and “USB computer connection”, select Media (MTP)
Now connect the Cat S40 device to your external storage drive via USB:
On the PC:
1. Click start
2. Select computer, and then select the Cat S40 from the portable devices list
3. Select internal storage
4. Navigate to the desired folder on the Cat S40
5. Click and hold or highlight the files that you wish to back-up and then drag them into the “Destination Folder” on the storage device

How do I ensure in do not disturb mode the clock alarm will be heard?

1. You will need to set priority interruptions, this can be done through settings menu. Select sound and notification and tap on interruptions
2. Or the short cut is via volume up or down. A pop up window appears tap on "Priority" and then the settings icon
3. In here you have Priority interruptions, if you select events and reminders you will receive your alarm at the time set
4. In addition you can receive designated calls or messages by activating them going to “Calls/message from” and managing your contacts list

Why does the Device not make certain calls?

During use, the device will not make calls for example to International numbers. Check if Fixed Dialling Numbers (FDN) is enabled:
1.   Go to the phone menu and select settings, select Call settings and then “SIM settings”
2.   Select Fixed Dialling Numbers (FDN)
3.   In this screen you can enable/Disable FDN, you will need to know the PIN2 code. You can also manage the list of FDN from this page

Why do calls to this device get picked up by other devices?

1.   Go to the phone menu and select settings, select Call settings and then “SIM settings”
2.   In this screen scroll down and select “Call Forwarding”
3.   Check if the “Always forward” option is enabled, if this is the case disable. In this screen there are three further options “forward when busy”, “Forward when unanswered” and “Forward when un reachable”
4.   Enable/Disable the functionality you desire

How is Caller ID enabled/disabled on this device?

1.  Go to the phone menu and select settings, select Call settings and then “SIM settings”
2.   In this screen scroll down to “Additional Settings”
3.   There are two options in this screen “Caller ID” and “Call waiting”. Select Caller ID, a pop up window will appear with three options, “Network default” select this if you are aware of what the default of the Network is and if that is what you require
4.   “Hide number”, check this is not set as this will prevent the caller ID being displayed at the receiving device
5.   “Show Number”, select this to ensure Caller ID is displayed at the receiving device

What does the message please Insert SIM card indicate?

1.   Make sure that you have correctly inserted the SIM card – The SIM card port cover has an illustration of the required SIM card orientation. IMPORTANT NOTE – Do not insert the SD card to the SIM slot, this may damage the SIM card reader contacts and the SIM card will not be able to be read. The device will need to be returned to the Service centre.
2.   If correctly fitted and the message is still displayed, please clean the contacts of the SIM card using a dry cloth.
3.   If still not being recognised please call your Network provider to ensure the SIM card has been enabled or to check if they have any further instructions.

What should I do if the device displays message “No Service”?

1.  This may be displayed if you are in an area that is not covered by your Network provider, or if you are in an area of poor reception for example an enclosed area.
2.   No service will be displayed on your screen until the situation is resolved by relocating to an area of service.
3.   If this problem persists when in a known good service location, contact your Network provider to ensure there are no restrictions on service or your SIM services.

What do I do if “Emergency Call only” is displayed on your Home screen?

1.  This will be displayed if there are issues with the SIM card
2.  Additionally if you are in an area not covered by your Network Provider.

What do I need to do if “Enter PUK code” is displayed?

1.  Following three consecutive failures to input the correct SIM card PIN code, the PIN code will be blocked and the request for the PUK code will be displayed.
2.  Before attempting to input the PUK code ensure that you have the correct code provided by Network provider.
3.  After ten unsuccessful attempts to input the PUK code, the SIM card will be permanently disabled.
4.   Once the SIM card is permanently disabled you will need to purchase a new SIM card.

What should I do when experiencing Reception Issues?

1.  Poor quality of calls: Please check if the volume of the device is adjusted to an acceptable comfortable level
2.  When the device is used in the areas with poor signal, e.g. near the high buildings or in basements, the call quality may be affected adversely
3.  When this device is used in a high call intensity period, like the rush hours, call failure may be caused by network congestion
4.  Standby time is reduced: Standby time is related to the system setting of network, it may be that the phone is used in an area with poor signal. Where there is poor signal, the phone will constantly attempt to communicate by searching for base station signal and battery will lose charge quicker, hence the standby time is reduced.

How do I resolve when Poor Sound Quality is experienced?

There are a number of contributing factors which can affect the audio performance of your device for example:

  1. If the handset has been subject to immersion in water then the microphone and speaker will need to dry out for them to resume to normal functionality
  2. If the incoming call has been routed long distance and is being routed through a number of service providers telecoms infrastructure
  3. Technical performance between handset manufacturers, this can be software or hardware related
  4. The environment the handset is used in, especially where there is background noise, typically traffic in a busy city environment or large shopping centres (malls) and airports

All handset manufacturers must design equipment to work within very rigorous standards set by organisations like the European Union. These are normally safety based so that you do not suffer from hearing problems with extended use.
All Cat products meet these safety standards and hence are CE marked as an assurance that we comply with these standards and our audio levels are within safe limits.



Non-removable Lithium Ion
Talk Time*
18 hours
Standby Time*
39 days (Single Sim)


Display Type
Super bright 4.7″ IPS, qHD, 540×960
Display Cover
Corning® Gorilla® Glass 4


8MP Autofocus
Video Capture
Yes, 720p, 30fps


Audio Jack
802.11 b/g/n
micro-USB 2.0, USB-OTG
Sim Type
Nano sim

Data Speed

Maximum Downlink Data Rate
Maximum Uplink Data Rate


ROM Flash
Extended Storage
microSD™ up to 64GB


Audio Playback
Audio Recording
Video Playback
H.263, H.264, H.265, MPEG4, VP8, VP9
Video Recording


2G Frequencies
850/900/1800/1900 MHz
3G Frequencies
850/900/2100 (ROW variant) | 850/AWS/1900 (North America variant)
Yes, Cat 4
4G Bands (LTE)
1, 3, 7, 8, 20 (ROW variant) | 2, 4, 5, 7, 12, 17 (North America variant)


Processor Type
Qualcomm MSM8909 Quad-core 1.1Ghz
Android™ 5.1 Lollipop


IP Rating
IP68 Certified
Up to 1m for 60 mins
Dust Proof
Impervious to dust
Drop Test
Up to 1.8M (6 ft)
Military Standard
MIL-SPEC 810G, Shock and Drop, Operating Temp: -25°C (-13°F) to 55°C (131°F), Category 4 vibration


Proximity Sensor
Ambient Light Sensor


144.9 x 74.08 x 12.45 mm


Contact our Customer Service team



In the unlikely event of an in-warranty fault, contact our Customer Service team who will be happy to help