Last week, I flew over to Barcelona to attend Mobile World Congress, a tech-filled trade show full of gadgets from pretty much every tablet, smartphone and technology maker you can think of, apart from Apple.

For me, it was a daunting task. There, I'd be faced with hundreds of non-Apple products to write about, gets hands-on with and review. I was convinced I'd hate them all. After all, I've always been an Apple fan girl.

Now, I'm not saying I'm no longer a fan of Apple. I'm simply confessing that perhaps some Android and Windows-based aren't so bad after all. There's one thing that really stood out for me, and it's probably the main thing I learned from my time at MWC: Apple really needs to make a bigger iPhone.

I spent time playing with smartphones from the likes of LG, Nokia, Samsung, Sony, Acer and Asus, and almost every one of them had a significantly bigger screen than the iPhone 5s's 4in display. Each day, when I returned to my iPhone, I found myself wishing the screen was bigger.

Previously, I'd believed that a 4in display was enough, but after getting hands on with devices up to a whopping 5.9in, I began to realise that it's inevitable that Apple will launch a bigger iPhone soon.

There are downfalls to having a bigger screened smartphone, of course. They're not so easy to slip into your pocket or small handbag, for instance, and they gobble up a lot more battery life when in use. But aside from that, the advantages are certainly not to be overlooked.

Watching videos and viewing images becomes a completely new experience on a bigger display, as does playing games. Even browsing the web feels nicer and easier on the eyes, and, if it's been executed well (and let's face it, Apple always does a great job when it comes to design), bigger smartphones can look really rather impressive.

Of the top 18 smartphones of 2014 listed on our sister title PC Advisor's buying guide, 11 have screen sizes above 4.5in, and even the 'mini' and 'compact' models from Sony, Samsung and HTC have bigger screen sizes than Apple's iPhone 5 series.

I'm not necessarily suggesting that Apple should release a phablet, though I did find myself taking a liking to the LG G Pro 2 (below) while at MWC, but a screen size of 4.5 or above could make all the difference.

Apple's touted its aim of enabling one-handed smartphone use with its iPhone, but perhaps that's not the most important thing to consider anymore. Customers want to consume more media than ever using their smartphones, and a screen size of 4in or below is just not good enough when there are competitors out there offering stunning screens on smartphones that are not very dissimilar to the high quality, powerful and feature-filled iPhone 5s.

I'd be surprised, and somewhat disappointed, if Apple didn't increase the size of the iPhone's screen this year. For those without the need for a bigger smartphone, Apple should continue selling the iPhone 5s. Alternatively, the iPhone range could expand to offer an all-new 4in model as well as a larger model to cater for a wider audience.

Apple CEO Tim Cook has previously been believed to have the perception that the iPhone line-up should stick to a minimum number of models, but a recent comment claiming that his opinion about this has been misunderstood suggests otherwise.

I have no doubt that there will be Apple customers, and Android customers too, who would welcome a bigger iPhone with open arms and rush to snap one up in a heartbeat. Me included.