Manualsbrain.com
  1. Manuals
  2. Brands
  3. Citizen
  4. MD257
  5. User Manual

Citizen MD257 User Manual

Download
Page of 51
Page  2
1) Which iPhone® is compatible with the Proximity 
App and watch?
Proximity FAQ
Due to the Bluetooth® technology required, (BLE 4.0 
and above), The Proximity watch and App integrate 
with the iPhone® 4S and higher. 
2) What are the minimum specifications needed to 
install and run the Proximity App?
o
 
iPhone® 4S or higher 
o
 
iOS 5.1 or higher 
o
 
iTunes account to download the free Proximity
   App
3) Which model or style number of the iPhone® is 
compatible with the Proximity App?
Any version of the iPhone® 6,  iPhone® 5 or iPhone® 
4S running iOS 5.1 or higher.
4) How do I know which version of iOS my iPhone® 
is running?
From the settings App on your iPhone®: 
o
 
Tap on General 
o
 
Tap on About 
o 
Scroll to "Version"
5) Which iPhone® 4S models are compatible with 
the Proximity App?
On the back of  your phone, the model  
number will reflect: 
A1387 (iPhone® 4S - GSM and CDMA) 
A1431 (iPhone® 4S China) 
 
You may also find information specific to your 
iPhone® 4S: 
From the settings App on your iPhone®: 
o
 
Tap on General 
o
 
Tap on About 
o
 
Scroll to "Model" 
 
Black Models:   
16GB :  MC918, MD234, MD235, MD276, MD377, 
MD865   
32 GB  MC919, MC923, MD241, MD278, MD379  
 64 GB  MD257, MD258, MD269, MD280, MD381   
 
White Models:   
16 GB  MC920, MD237, MD277, MD378, MD866   
32 GB  MC922, MD244, MD279, MD380   
64 GB  MD260, MD271, MD281, MD382