Na mobitelu više nemam dovoljno memorije, pa ne mogu spremiti novu fotografiju.

Yes, literally na mobitelu means on the mobile phone, and Croatian often uses na where English would prefer on or sometimes just express location more loosely.

Here it means something like:

• on my phone
• in my phone
• on the device

Croatian commonly says:

• na mobitelu = on the phone
• na računalu = on the computer
• na internetu = on the internet

So this is a normal, idiomatic way to say that the lack of memory is on the phone/device.

Because na here is expressing location, and after na in that meaning, Croatian uses the locative case.

• nominative: mobitel
• locative: na mobitelu

So:

• Mobitel je nov. = The phone is new.
• Na mobitelu nemam mjesta. = I don’t have space on the phone.

This is a very common pattern:

• na stolu = on the table
• na poslu = at work
• na internetu = on the internet

Here više means no longer / any more.

So:

• više nemam = I no longer have
• I don’t have any more

In this sentence:

• Na mobitelu više nemam dovoljno memorije
  = I no longer have enough memory on my phone

Be careful: više can also mean more, depending on context.

Compare:

• Trebam više vremena. = I need more time.
• Više ne pušim. = I no longer smoke.
• Ne pušim više. = I don’t smoke any more.

So in your sentence, više is temporal, not comparative.

Because in Croatian, the negative form of imati is a single word:

• imam = I have
• nemam = I do not have

So the sentence correctly says:

• više nemam = I no longer have

Not:

• ne imam ❌

This is true for some common verbs:

• imam → nemam
• mogu → ne mogu

So later in the sentence:

• ne mogu spremiti = I cannot save

Because dovoljno works like a quantity word here, and after quantity expressions Croatian often uses the genitive.

So:

• dovoljno memorije = enough memory
• puno vremena = a lot of time
• malo novca = little money

Here:

• memorije is genitive singular of memorija

This pattern is very important:

• Imam dovoljno vremena. = I have enough time.
• Nemam dovoljno novca. = I don’t have enough money.
• Nema dovoljno mjesta. = There isn’t enough space.

So dovoljno memorije is the natural form.

In everyday Croatian, memorija is commonly used for storage space on a device, especially in casual speech.

So in this sentence:

• memorija means phone storage / memory space

Depending on context, people might also say:

• prostor = space
• slobodna memorija = free memory
• memorijski prostor = storage space

But nemam dovoljno memorije is completely natural and common.

Here pa means so, therefore, or and so.

It connects the two parts:

• I no longer have enough memory on my phone, so I can’t save a new photo.

Croatian pa is very common in speech and writing. It can connect ideas in a simple, natural way.

Compare:

• Kasno je, pa idem kući. = It’s late, so I’m going home.
• Nemam novca, pa ne mogu kupiti to. = I don’t have money, so I can’t buy that.

It is slightly more conversational and flowing than some more formal connectors.

Spremiti here means to save.

So:

• ne mogu spremiti novu fotografiju = I can’t save a new photo

The verb spremiti has several meanings depending on context:

• put away
• store
• prepare in some situations
• in tech contexts, save

For example:

• Spremi knjigu na policu. = Put the book on the shelf.
• Spremi dokument. = Save the document.

In this sentence, because we are talking about memory on a phone and a photo, spremiti clearly means save/store on the device.

Because spremiti is the perfective form, and here it refers to a single completed action: saving one new photo.

• spremiti = to save / put away completely, once
• spremati = to be saving / to save repeatedly / habitually / over time

In this sentence, the idea is:

• I can’t complete the action of saving this one photo.

So spremiti is the natural choice.

Compare:

• Ne mogu spremiti fotografiju. = I can’t save the photo.
• Spremam fotografije svaki dan. = I save/am saving photos every day.

This is a classic Croatian aspect contrast: single completed action vs ongoing/repeated action.

It is in the accusative case, because it is the direct object of spremiti.

The base form is:

• nova fotografija = a new photo

In the accusative singular:

• novu fotografiju

So:

• spremiti novu fotografiju = to save a new photo

Breakdown:

• nova → novu
• fotografija → fotografiju

This is a very common feminine singular accusative pattern for nouns ending in -a:

• kupujem novu knjigu = I’m buying a new book
• vidim staru kuću = I see an old house
• spremiti novu fotografiju = save a new photo

Yes, absolutely.

You could also hear:

• Ne mogu spremiti novu sliku.

Both are understandable, but there is a slight difference in feel:

• fotografija = photo / photograph, a bit more precise
• slika = picture / image, often broader and very common in speech

On a phone, both can work. If you specifically mean a photo taken with the camera, fotografija is slightly more exact.

Because Croatian often leaves out possessives like my, your, his when the meaning is obvious from context.

Since the verb is nemam = I don’t have, it is natural to understand:

• na mobitelu = on my phone

Croatian often prefers this shorter style when ownership is clear.

Compare:

• Boli me glava. = My head hurts.
  (literally: The head hurts me.)
• Punim mobitel. = I’m charging my phone.
• Nemam prostora na računalu. = I don’t have space on my computer.

If you want to emphasize it, you can say:

• Na svom mobitelu više nemam dovoljno memorije.

But in normal conversation, it is usually unnecessary.

Not in the same way.

• pa introduces a result: so
• jer introduces a reason: because

Your sentence says:

• I don’t have enough memory, so I can’t save a new photo.

That is cause → result, so pa fits well.

If you used jer, you would need to reorganize the logic. For example:

• Ne mogu spremiti novu fotografiju jer na mobitelu više nemam dovoljno memorije.
  = I can’t save a new photo because I no longer have enough memory on my phone.

So both ideas are possible, but the connector changes the structure.

Croatian word order is fairly flexible, but some versions sound more natural than others.

Original:

• Na mobitelu više nemam dovoljno memorije, pa ne mogu spremiti novu fotografiju.

Possible variation:

• Više nemam dovoljno memorije na mobitelu, pa ne mogu spremiti novu fotografiju.

This still sounds natural.

Croatian often moves elements around for emphasis:

• Na mobitelu can be fronted to emphasize the location.
• više is usually placed near the verb it modifies.
• novu fotografiju usually stays after spremiti.

So the original sentence is natural and well-balanced, but it is not the only possible word order.

The original is already natural, but in casual speech people might say:

• Na mobitelu više nemam dovoljno memorije pa ne mogu spremiti novu fotku.
• Nemam više mjesta na mobitelu pa ne mogu spremiti novu fotografiju.

Notes:

• fotka = casual for photo
• mjesto = space, room

So learners may hear:

• Nemam više mjesta na mobitelu. = I don’t have any more space on my phone.

That is very common in conversation.

A few important ones come together here:

1. Preposition + locative

   • na mobitelu

2. Negative verb forms

   • nemam
   • ne mogu

3. više meaning no longer / any more

   • više nemam

4. Quantity word + genitive

   • dovoljno memorije

5. Perfective infinitive for a single completed action

   • spremiti

6. Accusative direct object

   • novu fotografiju

So this is actually a very useful sentence for learning several common Croatian patterns at once.