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How do I ensure that my online store works on mobile?

Jul 10, 2025

Mobile optimization of online stores is essential today, as the majority of consumers browse and shop on mobile devices. In Finland, more than half of online purchases are made on smartphones, and the number is constantly growing. Without a functioning mobile version, online stores lose a significant portion of potential customers and sales.

The use of mobile devices for shopping has grown exponentially in recent years. More and more Finnish consumers are making purchasing decisions on the go, which highlights the importance of responsive online shopping. A mobile-optimized online store improves the user experience, which in turn increases conversion rates and reduces bounce rates.

Search engines, especially Google, favor mobile-friendly sites in their search results, so mobile optimization also affects the visibility of an online store. For an online retailer, mobile optimization is no longer an option but a vital condition for success in the digital market.

How do I test the functionality of my online store on mobile devices?

Testing the mobile functionality of your online store is best done by using several different methods and tools in parallel. Start testing with the Google Mobile-Friendly Test, which gives a quick overview of your site's mobile-friendliness and highlights any potential problems.

In practical testing, it is important to use a variety of physical devices – smartphones and tablets with different operating systems (iOS, Android) and screen sizes. It is worth testing at least Chrome, Safari, Firefox and Edge browsers, as they handle content slightly differently.

Responsiveness can also be tested on a computer browser using developer tools that simulate different screen sizes. In particular, check how site elements scale on different screens and whether all touch elements work at a sufficient size.

  • Test your loading speed with Google PageSpeed ​​Insights
  • Check the functionality and usability of navigation on a small screen
  • Go through the entire purchase process on different mobile devices
  • Ensure forms work on mobile devices

Shopify platform users have access to themes that are already mobile-optimized, but it's also worth testing them to ensure functionality.

What are the most common problems with online store mobile functionality?

The most common problems with mobile functionality in e-commerce are related to user experience and technical implementation. One of the biggest problems is that touch elements are too small – if buttons, links and menus are too small or too close together, it is difficult for the user to navigate the site without making mistakes.

Slow loading speed is another critical issue in mobile e-commerce. On mobile, users expect fast functionality, and even a few seconds of delay can lead to user abandonment. Heavy loading images, unoptimized files, and unnecessary scripts significantly slow down a site.

Text readability issues are highlighted on a small screen. Too small a font size, poor contrast, or incorrectly scaled text elements make content difficult to read. Filling out forms is also often difficult on mobile devices, especially if the fields are small or close together.

A navigation structure that works well on a desktop may not be suitable for mobile. Complex menu structures, drop-down menus, and multi-level navigation can make navigating a site challenging. Image scalability issues and poor optimization for mobile are also often visible to the user.

How do I optimize my online store checkout process for mobile devices?

Optimizing your online store checkout process for mobile devices starts with simplifying your forms. Eliminate unnecessary fields and only ask for the information you need. Use clear, large enough input fields, and make sure the keyboard automatically switches based on the field type (e.g., numeric keypad for phone number).

Clear and visual presentation of payment methods is important. Show payment options with icons and short descriptions. The shopping cart should be easy to use even on a small screen – make sure that changing the quantity and deleting products is easy in a mobile-friendly online store.

A single-page checkout process works better on mobile than traditional multi-step checkouts. The user sees all the steps at once, which reduces the need to load pages. Automatic data completion speeds up the process significantly – take advantage of browser autofill features and offer the option to save data for later use.

Offering fast payment methods like Apple Pay, Google Pay, or MobilePay significantly improves the mobile shopping experience, allowing customers to skip filling out lengthy forms and pay quickly from their own device.

The most important considerations for mobile optimization in e-commerce

The most important thing in mobile optimization for your online store is continuous testing on different devices and browsers. Technology and devices are evolving rapidly, so regular testing is essential. Make testing a part of your routine, especially when updating your online store.

Customer feedback is a valuable source of information for improving the user experience of your online store. Actively monitor feedback and respond to it quickly. Questions and problems often reveal areas for improvement that you may not have noticed yourself.

Tracking mobile analytics provides concrete data on how users interact with your online store. Pay attention to bounce rates, visit duration, and conversion rates on mobile devices. Compare these figures to those on the desktop version and identify areas for improvement.

Keeping your technology up-to-date ensures the best possible functionality. Choose an e-commerce platform, such as Shopify, that supports mobile optimization well and is updated regularly. Always prioritize customer experience over technical solutions – in the end, it’s all about how easy and enjoyable it is for the customer to shop online on a mobile device.

Brancoy toimitusjohtaja Samuli Ala-Kasari mustassa hupparissa.

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