Keep in mind following when designing for mobile ERP strategy.
Limited functionality:
"You're not going to do heavy data mining on a tablet, or smartphone. When you start talking about mobile strategy, you need to set an expectation of limited amounts of functionality." These include limited set of data for your most important processes etc.
User experience:
Employees may have inflated expectations of mobile ERP performance based on their largely speedy and problem-free experiences with consumer mobile apps. Your interaction with an ERP system on a mobile device may have special considerations. For example, you may need to go through a VPN, which will slow down device performance drastically.
Form factor:
While smartphones are smaller and easier to carry than a tablet, they have smaller screens. Screen size is a key consideration in use cases. This is why using a laptop or PC seems to be the more efficient solution. A phone will be fine for checking data and numbers, but if you are doing a sales pitch or presentation for a potential client, it will not be optimal.You'd have to shove a phone into a client's face for them to be able to view a presentation. It is a lot easier to respect someone's personal space with a 10-inch tablet than it is with a smartphone.
Native vs. Web apps:
Because native applications are directly downloaded on mobile devices and offer direct interaction between back-end systems and the device, they can handle more heavy lifting. While that is an advantage, a potential disadvantage is that native apps typically require more coding and software development work.
Connectivity:
You may have clients in mountains where there is nonexistent Internet connectivity. Noting that one approach to dealing with less than ubiquitous Internet access is to allow users to continue to save information locally to a mobile device and app even if connectivity is lost and then automatically submit the information to back-end systems when connectivity is restored.
Who needs to be mobile and how much:
In many companies, salespeople need to be highly mobile, so being able to support them with mobile ERP is important. They will likely face greater challenges with connectivity, data security and other aspects of mobility than some of their coworkers. Workers on a production line may only use a stationery tablet, which will present different mobile ERP issues.
Mobile OS’s:
Android and Apple's iOS are the two dominant mobile operating systems. If your company is going to sponsor mobile devices, deciding which OS to support will be a big conversation. So many people have "strong personal connections" to their devices and thus to a particular OS some companies decide to allow users to provide their own devices and must support multiple OS’s.
Data security:
Noting that companies are basically setting employees up to have access to whatever data they have access to in the office on their mobile devices. This could create both audit and security issues if data is stored directly on devices.
Usability:
If a mobile ERP user interface is good, salespeople can streamline their interactions with clients while also looking impressive but results can be disastrous with a bad user interface.