# How much download data is used when viewing a Question Series?

THE BEST OPTION IS TO CONNECT TO A WI-FI NETWORK WHERE DOWNLOADS ARE NOT
COUNTED, IF YOU ARE USING MOBILE DATA, DOWNLOAD DATA WILL DEPEND ON THE TYPES OF
QUESTION SERIES YOU DO.

Use the following table as a guide to understand the data usage for a typical
Question series with multimedia.

Question Series  Low Resolution Device  Medium Resolution Device  High
Resolution Device 

8 questions with 4 videos and 4 audio clips  23 MB  26 MB  42 MB 

12 questions with 6 videos and 6 audio clips  35 MB  39 MB  63 MB 


WHAT FACTORS CAN AFFECT THE AMOUNT OF DATA IN A QUESTION SERIES?

With Forget Me Not there are two types of Question Series:

 * Questions with no multimedia so almost no download data will be recorded
 * Question with multimedia such as images, audio clips, videos, weblinks and
   documents

Things that affect the amount of data downloaded are:

 * The number of questions in the Question Series with multimedia elements
 * The amount and types of multimedia in the Question Series
 * How often you view the questions or resources with videos and audio clips
 * The type of display your mobile device has; low, medium or high resolution
   display

To help with determining possible data usage on mobile networks some average
values are provided for the types of multimedia used in a Question Series

Multimedia Type  Approximate Size  Notes 

Low resolution Image*  20 kB - 80 kB  Image size depends on complexity of the
image and number of colours 

Medium resolution image*  80 kB - 120 kB  Image size depends on complexity of
the image and number of colours 

High resolution image*  120 kB - 500 kB  Image size depends on complexity of the
image and number of colours 

1 minute of mp3 audio clip  500 kB - 1 MB  audio file size depends on quality
settings used with the audio 

1 minute of mp4 video  3 MB - 4 MB  Video file size depends on complexity of the
video and quality settings used 

1 page PDF document  200 kB - 400 kB  PDF file size depends on the complexity of
the content and compression settings used 

* Images and documents are only downloaded once and then accessed locally from
the mobile device for future views

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